psync/psync.c0000644000175000017500000007574713356177053013776 0ustar kobayasykobayasy/* psync.c - Last modified: 05-Oct-2018 (kobayasy) * * Copyright (c) 2018 by Yuichi Kobayashi * * Permission is hereby granted, free of charge, to any person * obtaining a copy of this software and associated documentation files * (the "Software"), to deal in the Software without restriction, * including without limitation the rights to use, copy, modify, merge, * publish, distribute, sublicense, and/or sell copies of the Software, * and to permit persons to whom the Software is furnished to do so, * subject to the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "psync_utils.h" #include "psync.h" #define POLL_TIMEOUT 30000 /* [msec] */ #define LOADBUFFER_SIZE (1024*16) /* [byte] */ #ifndef SYMLINK_MAX #define SYMLINK_MAX PATH_MAX #endif /* #ifndef SYMLINK_MAX */ #if LOADBUFFER_SIZE < SYMLINK_MAX #undef LOADBUFFER_SIZE #define LOADBUFFER_SIZE SYMLINK_MAX #endif /* #if LOADBUFFER_SIZE < SYMLINK_MAX */ ssize_t write_sp(int fd, const void *buf, size_t count) { ssize_t status = -1; size_t size; struct pollfd fds; ssize_t n; size = count; fds.fd = fd, fds.events = POLLOUT; while (size > 0) { if (poll(&fds, 1, POLL_TIMEOUT) != 1) goto error; if (!(fds.revents & POLLOUT)) goto error; n = write(fd, buf, size); switch (n) { case -1: case 0: /* end of file */ goto error; } size -= n; buf += n; } status = count; error: return status; } ssize_t read_sp(int fd, void *buf, size_t count) { ssize_t status = -1; size_t size; struct pollfd fds; ssize_t n; size = count; fds.fd = fd, fds.events = POLLIN; while (size > 0) { if (poll(&fds, 1, POLL_TIMEOUT) != 1) goto error; if (!(fds.revents & POLLIN)) goto error; n = read(fd, buf, size); switch (n) { case -1: case 0: /* end of file */ goto error; } size -= n; buf += n; } status = count; error: return status; } int strcmp_sp(const char *s1, const char *s2) { int n = strcmp(s1, s2); if (n < 0) { if (!*s1) n = INT_MAX; } else if (n > 0) { if (!*s2) n = INT_MIN; } return n; } #define FST_UPLD 0x08 #define FST_DNLD 0x80 #define FST_LTYPE 0x07 #define FST_LREG 0x01 #define FST_LDIR 0x02 #define FST_LLNK 0x03 #define FST_RTYPE 0x70 #define FST_RREG 0x10 #define FST_RDIR 0x20 #define FST_RLNK 0x30 typedef struct { time_t revision; time_t mtime; mode_t mode; off_t size; uint8_t flags; } FST; typedef struct s_flist { struct s_flist *next, *prev; FST st; char name[1]; } FLIST; typedef enum { FSETS_1AND2, FSETS_1NOT2, FSETS_2NOT1 } FSETS; static FLIST *new_f(FLIST *flist) { LIST_NEW(flist); memset(&flist->st, 0, sizeof(flist->st)); return flist; } static FLIST *add_f(FLIST *flist, const char *name) { FLIST *fnew = NULL; if (!*name) goto error; fnew = malloc(offsetof(FLIST, name) + strlen(name) + 1); if (fnew == NULL) goto error; strcpy(fnew->name, name); memset(&fnew->st, 0, sizeof(fnew->st)); LIST_INSERT_NEXT(fnew, flist); error: return fnew; } static int each_next_f(FLIST *flist, int (*func)(FLIST *f, void *data), void *data, volatile sig_atomic_t *stop ) { int status = INT_MIN; FLIST *f = flist; FLIST *fnext; if (*f->name) goto error; f = flist->next; while (*f->name) { ONSTOP(stop, -1); fnext = f->next; status = func(f, data); if (ISERR(status)) goto error; f = fnext; } status = 0; error: return status; } #if 0 // not used static int each_prev_f(FLIST *flist, int (*func)(FLIST *f, void *data), void *data, volatile sig_atomic_t *stop ) { int status = INT_MIN; FLIST *f = flist; FLIST *fprev; if (*f->name) goto error; f = flist->prev; while (*f->name) { ONSTOP(stop, -1); fprev = f->prev; status = func(f, data); if (ISERR(status)) goto error; f = fprev; } status = 0; error: return status; } #endif /* #if 0 // not used */ static int each_sets_f(FLIST *flist1, FLIST *flist2, int (*func)(FSETS sets, FLIST *f1, FLIST *f2, void *data), void *data, volatile sig_atomic_t *stop ) { int status = INT_MIN; FLIST *f1 = flist1; FLIST *f2 = flist2; FLIST *f1next, *f2next; int n; if (*f1->name || *f2->name) goto error; f1 = f1->next, f2 = f2->next; while (*f1->name || *f2->name) { ONSTOP(stop, -1); n = strcmp_sp(f1->name, f2->name); if (n < 0) { f1next = f1->next; status = func(FSETS_1NOT2, f1, f2, data); if (ISERR(status)) goto error; f1 = f1next; } else if (n > 0) { f2next = f2->next; status = func(FSETS_2NOT1, f1, f2, data); if (ISERR(status)) goto error; f2 = f2next; } else { f1next = f1->next, f2next = f2->next; status = func(FSETS_1AND2, f1, f2, data); if (ISERR(status)) goto error; f1 = f1next, f2 = f2next; } } status = 0; error: return status; } static int write_f(bool synced, FLIST *flist, int fd, volatile sig_atomic_t *stop ) { int status = INT_MIN; size_t length, n; FST st; if (*flist->name) { status = -1; goto error; } for (flist = flist->next; *flist->name; flist = flist->next) { ONSTOP(stop, -1); n = length = strlen(flist->name); WRITE_ONERR(n, fd, -1); if (write_sp(fd, flist->name, length) != length) { status = -1; goto error; } st = flist->st; WRITE_ONERR(st.revision, fd, -1); WRITE_ONERR(st.mtime, fd, -1); WRITE_ONERR(st.mode, fd, -1); if (synced) { WRITE_ONERR(st.size, fd, -1); st.flags = st.flags >> 4 | st.flags << 4; WRITE_ONERR(st.flags, fd, -1); } } length = 0; WRITE_ONERR(length, fd, -1); status = 0; error: return status; } static int read_f(bool synced, FLIST *flist, int fd, volatile sig_atomic_t *stop ) { int status = INT_MIN; size_t length; char dirname[PATH_MAX]; if (*flist->name) { status = -1; goto error; } READ_ONERR(length, fd, -1); while (length > 0) { ONSTOP(stop, -1); if (length > sizeof(dirname)-1) { status = -1; goto error; } if (read_sp(fd, dirname, length) != length) { status = -1; goto error; } dirname[length] = 0; flist = add_f(flist, dirname); if (flist == NULL) { status = -1; goto error; } READ_ONERR(flist->st.revision, fd, -1); READ_ONERR(flist->st.mtime, fd, -1); READ_ONERR(flist->st.mode, fd, -1); if (synced) { READ_ONERR(flist->st.size, fd, -1); READ_ONERR(flist->st.flags, fd, -1); } READ_ONERR(length, fd, -1); } status = 0; error: return status; } static int delete_func(FLIST *f, void *data) { int status = INT_MIN; LIST_DELETE(f); free(f); status = 0; return status; } #define FILEID 0x01665370 /* 'p', 'S', 'f', 1 */ #define SYNCDIR ".psync" #define LASTFILE "last" #define LOCKDIR "lock" #define UPFILE "u%lu" #define DOWNFILE "d%lu" typedef struct { time_t expire; int fdin, fdout; int info; volatile sig_atomic_t *stop; time_t t, tlast; FLIST fsynced; FLIST flocal, fremote; char dirname[1]; } PRIV; #define INFO(_priv, ...) \ do { \ if ((_priv)->info != -1) \ dprintf((_priv)->info, __VA_ARGS__); \ } while (0) static int lock(const char *dirname) { int status = INT_MIN; char pathname[PATH_MAX], *p; p = pathname, p += sprintf(p, "%s/%s", dirname, SYNCDIR); mkdir(pathname, S_IRWXU); sprintf(p, "/%s", LOCKDIR); status = mkdir(pathname, S_IRWXU) == -1 ? 1 : 0; return status; } static int unlock(const char *dirname) { int status = INT_MIN; char pathname[PATH_MAX], *p; DIR *dir; struct dirent *ent; p = pathname, p += sprintf(p, "%s/%s/%s", dirname, SYNCDIR, LOCKDIR); dir = opendir(pathname); if (dir != NULL) { *p++ = '/'; while ((ent = readdir(dir)) != NULL) { if (!strcmp(ent->d_name, ".") || !strcmp(ent->d_name, "..") ) continue; strcpy(p, ent->d_name); unlink(pathname); } *--p = 0; } status = rmdir(pathname) == -1 ? 1 : 0; return status; } static PRIV *new_priv(const char *dirname, time_t expire, volatile sig_atomic_t *stop ) { PRIV *priv = NULL; time_t t; if (time(&t) == -1) goto error; priv = malloc(offsetof(PRIV, dirname) + strlen(dirname) + 1); if (priv == NULL) goto error; strcpy(priv->dirname, dirname); priv->expire = t - expire; priv->fdin = -1, priv->fdout = -1; priv->info = -1; priv->stop = stop; priv->t = t, priv->tlast = -1; new_f(&priv->fsynced); new_f(&priv->flocal); new_f(&priv->fremote); if (lock(priv->dirname)) { free(priv), priv = NULL; goto error; } error: return priv; } static void free_priv(PRIV *priv) { unlock(priv->dirname); each_next_f(&priv->fsynced, delete_func, NULL, NULL); each_next_f(&priv->flocal, delete_func, NULL, NULL); each_next_f(&priv->fremote, delete_func, NULL, NULL); free(priv); } static int save_fsynced(PRIV *priv) { int status = INT_MIN; char pathname[PATH_MAX]; int fd = -1; uint32_t id; struct timeval tv[2]; sprintf(pathname, "%s/%s/%s", priv->dirname, SYNCDIR, LASTFILE); fd = creat(pathname, S_IRUSR|S_IWUSR); if (fd == -1) { status = ERROR_DMAKE; goto error; } id = FILEID; WRITE_ONERR(id, fd, ERROR_DWRITE); ONERR(write_f(false, &priv->fsynced, fd, NULL), ERROR_DWRITE); close(fd), fd = -1; tv[0].tv_sec = priv->t, tv[0].tv_usec = 0; tv[1].tv_sec = priv->t, tv[1].tv_usec = 0; if (lutimes(pathname, tv) == -1) { status = ERROR_DWRITE; goto error; } status = 0; error: if (fd != -1) close(fd); return status; } static int load_fsynced(PRIV *priv) { int status = INT_MIN; struct stat st; char pathname[PATH_MAX]; int fd = -1; uint32_t id; int n; sprintf(pathname, "%s/%s/%s", priv->dirname, SYNCDIR, LASTFILE); if (stat(pathname, &st) == -1) { status = ERROR_DREAD; goto error; } fd = open(pathname, O_RDONLY); if (fd == -1) { status = ERROR_DOPEN; goto error; } READ(id, fd, n); if (!ISERR(n) && id == FILEID) { status = read_f(false, &priv->fsynced, fd, priv->stop); ONSTOP(priv->stop, ERROR_STOP); if (ISERR(status)) { status = ERROR_DREAD; goto error; } } close(fd), fd = -1; priv->tlast = st.st_mtime; status = 0; error: if (fd != -1) close(fd); return status; } static int get_flocal_r(FLIST **flocal, FLIST **flast, char *pathname, char *name, volatile sig_atomic_t *stop ) { int status = INT_MIN; struct stat st; uint8_t ltype; int seek; FLIST *fprev; DIR *dir = NULL; char *p; FLIST *fdir; struct dirent *ent; if (lstat(pathname, &st) == -1) { status = ERROR_SREAD; goto error; } switch (st.st_mode & S_IFMT) { case S_IFREG: if (access(pathname, R_OK) != 0) { status = ERROR_FPERM; goto error; } ltype = FST_LREG; break; case S_IFDIR: if (access(pathname, R_OK|W_OK|X_OK) != 0) { status = ERROR_FPERM; goto error; } ltype = FST_LDIR; break; case S_IFLNK: ltype = FST_LLNK; break; default: status = ERROR_FTYPE; goto error; } LIST_SEEK_NEXT(*flocal, name, seek); LIST_SEEK_NEXT(*flast, name, seek); if (seek) { *flocal = add_f(*flocal, name); if (*flocal == NULL) { status = ERROR_MEMORY; goto error; } (*flocal)->st.revision = st.st_ctime > st.st_mtime ? st.st_ctime : st.st_mtime; } else { fprev = (*flast)->prev; LIST_DELETE(*flast); LIST_INSERT_NEXT(*flast, *flocal); *flocal = *flast, *flast = fprev; if ((*flocal)->st.mtime != st.st_mtime) (*flocal)->st.revision = st.st_ctime > st.st_mtime ? st.st_ctime : st.st_mtime; } (*flocal)->st.mtime = st.st_mtime; (*flocal)->st.mode = st.st_mode & (S_IFMT|S_IRWXU|S_IRWXG|S_IRWXO); (*flocal)->st.size = st.st_size; (*flocal)->st.flags |= ltype; switch (ltype & FST_LTYPE) { case FST_LDIR: dir = opendir(pathname); if (dir == NULL) { status = ERROR_FOPEN; goto error; } p = name, p += strlen(p), *p++ = '/'; fdir = *flocal; while ((ent = readdir(dir)) != NULL) { ONSTOP(stop, ERROR_STOP); if (!strcmp(ent->d_name, ".") || !strcmp(ent->d_name, "..") ) continue; strcpy(p, ent->d_name); status = get_flocal_r(flocal, flast, pathname, name, stop); if (ISERR(status)) goto error; if ((*flocal)->st.revision > fdir->st.revision) fdir->st.revision = (*flocal)->st.revision; } closedir(dir), dir = NULL; break; } status = 0; error: if (dir != NULL) closedir(dir); return status; } static int get_flocal(PRIV *priv) { int status = INT_MIN; struct stat st; DIR *dir = NULL; char pathname[PATH_MAX], *p; FLIST *flocal, *flast; struct dirent *ent; if (stat(priv->dirname, &st) == -1) { status = ERROR_SREAD; goto error; } switch (st.st_mode & S_IFMT) { case S_IFDIR: if (access(priv->dirname, R_OK|W_OK|X_OK) != 0) { status = ERROR_FPERM; goto error; } break; default: status = ERROR_FTYPE; goto error; } dir = opendir(priv->dirname); if (dir == NULL) { status = ERROR_FOPEN; goto error; } p = pathname, p += sprintf(p, "%s/", priv->dirname); flocal = &priv->flocal, flast = &priv->fsynced; while ((ent = readdir(dir)) != NULL) { ONSTOP(priv->stop, ERROR_STOP); if (!strcmp(ent->d_name, ".") || !strcmp(ent->d_name, "..") || !strcmp(ent->d_name, SYNCDIR) ) continue; strcpy(p, ent->d_name); status = get_flocal_r(&flocal, &flast, pathname, p, priv->stop); if (ISERR(status)) goto error; } closedir(dir), dir = NULL; status = 0; error: if (dir != NULL) closedir(dir); return status; } static int add_deleted_func(FSETS sets, FLIST *flocal, FLIST *flast, void *data) { int status = INT_MIN; PRIV *priv = data; switch (sets) { case FSETS_1AND2: LIST_DELETE(flast); free(flast); break; case FSETS_1NOT2: break; case FSETS_2NOT1: LIST_DELETE(flast); switch (flast->st.mode & S_IFMT) { case 0: /* deleted */ if (flast->st.revision > priv->expire) LIST_INSERT_PREV(flast, flocal); else free(flast); break; default: flast->st.revision = priv->tlast + 1; flast->st.mtime = 0; flast->st.mode = 0; flast->st.size = 0; LIST_INSERT_PREV(flast, flocal); } break; } status = 0; return status; } static int get_fsynced_func(FSETS sets, FLIST *flocal, FLIST *fremote, void *data) { int status = INT_MIN; PRIV *priv = data; switch (sets) { case FSETS_1AND2: if (flocal->st.revision < fremote->st.revision) { fremote->st.flags |= flocal->st.flags; if (flocal->st.mtime != fremote->st.mtime) fremote->st.flags |= FST_DNLD; LIST_DELETE(flocal); free(flocal); LIST_DELETE(fremote); LIST_INSERT_PREV(fremote, &priv->fsynced); } else { flocal->st.flags |= fremote->st.flags; if (flocal->st.revision > fremote->st.revision && flocal->st.mtime != fremote->st.mtime ) flocal->st.flags |= FST_UPLD; LIST_DELETE(fremote); free(fremote); LIST_DELETE(flocal); LIST_INSERT_PREV(flocal, &priv->fsynced); } break; case FSETS_1NOT2: flocal->st.flags |= FST_UPLD; LIST_DELETE(flocal); LIST_INSERT_PREV(flocal, &priv->fsynced); break; case FSETS_2NOT1: fremote->st.flags |= FST_DNLD; LIST_DELETE(fremote); LIST_INSERT_PREV(fremote, &priv->fsynced); break; } status = 0; return status; } static int preload(PRIV *priv) { int status = INT_MIN; intmax_t uploadsize, downloadsize; char pathname[PATH_MAX], *psrc; char uploadname[PATH_MAX], *pdst; unsigned long count; FLIST *fsynced; char buffer[SYMLINK_MAX]; uploadsize = 0, downloadsize = 0; psrc = pathname, psrc += sprintf(psrc, "%s/", priv->dirname); pdst = uploadname, pdst += sprintf(pdst, "%s/%s/%s/", priv->dirname, SYNCDIR, LOCKDIR); count = 0; for (fsynced = priv->fsynced.next; *fsynced->name; fsynced = fsynced->next) { ONSTOP(priv->stop, ERROR_STOP); switch (fsynced->st.flags & (FST_UPLD|FST_LTYPE)) { case FST_UPLD|FST_LREG: case FST_UPLD|FST_LLNK: strcpy(psrc, fsynced->name); sprintf(pdst, UPFILE, ++count); switch (fsynced->st.flags & FST_LTYPE) { case FST_LREG: if (link(pathname, uploadname) == -1) { status = ERROR_FLINK; goto error; } break; case FST_LLNK: if (readlink(pathname, buffer, sizeof(buffer)) != fsynced->st.size) { status = ERROR_FREAD; goto error; } if (symlink(buffer, uploadname) == -1) { status = ERROR_FWRITE; goto error; } break; } uploadsize += fsynced->st.size; break; } switch (fsynced->st.flags & (FST_DNLD|FST_RTYPE)) { case FST_DNLD|FST_RREG: case FST_DNLD|FST_RLNK: downloadsize += fsynced->st.size; break; } } INFO(priv, "P%+jd%+jd\n", uploadsize, downloadsize); status = 0; error: return status; } static int upload(PRIV *priv) { int status = INT_MIN; intmax_t progress; char uploadname[PATH_MAX], *p; unsigned long count; FLIST *fsynced; off_t size; int fd = -1; ssize_t n; char buffer[LOADBUFFER_SIZE]; progress = 0; p = uploadname, p += sprintf(p, "%s/%s/%s/", priv->dirname, SYNCDIR, LOCKDIR); count = 0; for (fsynced = priv->fsynced.next; *fsynced->name; fsynced = fsynced->next) { ONSTOP(priv->stop, ERROR_STOP); switch (fsynced->st.flags & (FST_UPLD|FST_LTYPE)) { case FST_UPLD|FST_LREG: case FST_UPLD|FST_LLNK: sprintf(p, UPFILE, ++count); size = fsynced->st.size; switch (fsynced->st.flags & FST_LTYPE) { case FST_LREG: fd = open(uploadname, O_RDONLY); if (fd == -1) { status = ERROR_FOPEN; goto error; } while (size > 0) { ONSTOP(priv->stop, ERROR_STOP); n = read_sp(fd, buffer, size > sizeof(buffer) ? sizeof(buffer) : size); if (n == -1) { status = ERROR_FREAD; goto error; } if (write_sp(priv->fdout, buffer, n) != n) { status = ERROR_FUPLD; goto error; } size -= n; INFO(priv, "U%+jd\n", progress += n); } close(fd), fd = -1; break; case FST_LLNK: if (readlink(uploadname, buffer, size) != size) { status = ERROR_FREAD; goto error; } if (write_sp(priv->fdout, buffer, size) != size) { status = ERROR_FUPLD; goto error; } INFO(priv, "U%+jd\n", progress += size); break; } if (unlink(uploadname) == -1) { status = ERROR_FREMOVE; goto error; } break; } } status = 0; error: if (fd != -1) close(fd); return status; } static int download(PRIV *priv) { int status = INT_MIN; intmax_t progress; char downloadname[PATH_MAX], *p; unsigned long count; FLIST *fsynced; off_t size; int fd = -1; ssize_t n; char buffer[LOADBUFFER_SIZE]; struct timeval tv[2]; progress = 0; p = downloadname, p += sprintf(p, "%s/%s/%s/", priv->dirname, SYNCDIR, LOCKDIR); count = 0; for (fsynced = priv->fsynced.next; *fsynced->name; fsynced = fsynced->next) { ONSTOP(priv->stop, ERROR_STOP); switch (fsynced->st.flags & (FST_DNLD|FST_RTYPE)) { case FST_DNLD|FST_RREG: case FST_DNLD|FST_RLNK: sprintf(p, DOWNFILE, ++count); size = fsynced->st.size; switch (fsynced->st.flags & FST_RTYPE) { case FST_RREG: fd = creat(downloadname, S_IRUSR|S_IWUSR); if (fd == -1) { status = ERROR_FMAKE; goto error; } while (size > 0) { ONSTOP(priv->stop, ERROR_STOP); n = read_sp(priv->fdin, buffer, size > sizeof(buffer) ? sizeof(buffer) : size); if (n == -1) { status = ERROR_FDNLD; goto error; } if (write_sp(fd, buffer, n) != n) { status = ERROR_FWRITE; goto error; } size -= n; INFO(priv, "D%+jd\n", progress += n); } close(fd), fd = -1; if (chmod(downloadname, fsynced->st.mode & (S_IRWXU|S_IRWXG|S_IRWXO)) == -1) { status = ERROR_SWRITE; goto error; } break; case FST_RLNK: if (size > sizeof(buffer)-1) { status = ERROR_SYSTEM; goto error; } if (read_sp(priv->fdin, buffer, size) != size) { status = ERROR_FDNLD; goto error; } buffer[size] = 0; if (symlink(buffer, downloadname) == -1) { status = ERROR_FWRITE; goto error; } INFO(priv, "D%+jd\n", progress += size); break; } tv[0].tv_sec = fsynced->st.mtime, tv[0].tv_usec = 0; tv[1].tv_sec = fsynced->st.mtime, tv[1].tv_usec = 0; if (lutimes(downloadname, tv) == -1) { status = ERROR_SWRITE; goto error; } break; } } status = 0; error: if (fd != -1) close(fd); return status; } static int commit(PRIV *priv) { int status = INT_MIN; char pathname[PATH_MAX], *pdst; char downloadname[PATH_MAX], *psrc; FLIST *fsynced; unsigned long count; struct timeval tv[2]; pdst = pathname, pdst += sprintf(pdst, "%s/", priv->dirname); psrc = downloadname, psrc += sprintf(psrc, "%s/%s/%s/", priv->dirname, SYNCDIR, LOCKDIR); for (fsynced = priv->fsynced.prev; *fsynced->name; fsynced = fsynced->prev) switch (fsynced->st.flags & (FST_DNLD|FST_LTYPE)) { case FST_DNLD|FST_LREG: case FST_DNLD|FST_LLNK: strcpy(pdst, fsynced->name); if (unlink(pathname) == -1) { status = ERROR_FREMOVE; goto error; } break; case FST_DNLD|FST_LDIR: switch (fsynced->st.flags & FST_RTYPE) { case FST_RREG: case FST_RLNK: case 0: /* deleted */ strcpy(pdst, fsynced->name); if (rmdir(pathname) == -1) { status = ERROR_FREMOVE; goto error; } break; } break; } count = 0; for (fsynced = priv->fsynced.next; *fsynced->name; fsynced = fsynced->next) switch (fsynced->st.flags & (FST_DNLD|FST_RTYPE)) { case FST_DNLD|FST_RREG: case FST_DNLD|FST_RLNK: strcpy(pdst, fsynced->name); sprintf(psrc, DOWNFILE, ++count); if (rename(downloadname, pathname) == -1) { status = ERROR_FMOVE; goto error; } break; case FST_DNLD|FST_RDIR: switch (fsynced->st.flags & FST_LTYPE) { case FST_LREG: case FST_LLNK: case 0: /* deleted */ strcpy(pdst, fsynced->name); if (mkdir(pathname, fsynced->st.mode & (S_IRWXU|S_IRWXG|S_IRWXO)) == -1) { status = ERROR_FMAKE; goto error; } break; case FST_LDIR: strcpy(pdst, fsynced->name); if (chmod(pathname, fsynced->st.mode & (S_IRWXU|S_IRWXG|S_IRWXO)) == -1) { status = ERROR_SWRITE; goto error; } break; } break; } for (fsynced = priv->fsynced.prev; *fsynced->name; fsynced = fsynced->prev) switch (fsynced->st.flags & (FST_DNLD|FST_RTYPE)) { case FST_DNLD|FST_RDIR: strcpy(pdst, fsynced->name); tv[0].tv_sec = fsynced->st.mtime, tv[0].tv_usec = 0; tv[1].tv_sec = fsynced->st.mtime, tv[1].tv_usec = 0; if (lutimes(pathname, tv) == -1) { status = ERROR_SWRITE; goto error; } break; } status = 0; error: return status; } typedef struct { PRIV *priv; int status; pthread_t tid; } LOAD_PARAM; static void *upload_thread(void *data) { LOAD_PARAM *param = data; param->status = upload(param->priv); return NULL; } static int run(bool master, PRIV *priv) { int status = INT_MIN; LOAD_PARAM upload_param = {priv, INT_MIN}; ONSTOP(priv->stop, ERROR_STOP); load_fsynced(priv); ONSTOP(priv->stop, ERROR_STOP); status = get_flocal(priv); if (ISERR(status)) goto error; ONSTOP(priv->stop, ERROR_STOP); status = each_sets_f(&priv->flocal, &priv->fsynced, add_deleted_func, priv, priv->stop); ONSTOP(priv->stop, ERROR_STOP); if (ISERR(status)) goto error; if (master) { status = read_f(true, &priv->fremote, priv->fdin, priv->stop); ONSTOP(priv->stop, ERROR_STOP); if (ISERR(status)) { status = ERROR_SDNLD; goto error; } status = each_sets_f(&priv->flocal, &priv->fremote, get_fsynced_func, priv, priv->stop); ONSTOP(priv->stop, ERROR_STOP); if (ISERR(status)) goto error; status = write_f(true, &priv->fsynced, priv->fdout, priv->stop); ONSTOP(priv->stop, ERROR_STOP); if (ISERR(status)) { status = ERROR_SUPLD; goto error; } } else { status = write_f(true, &priv->flocal, priv->fdout, priv->stop); ONSTOP(priv->stop, ERROR_STOP); if (ISERR(status)) { status = ERROR_SUPLD; goto error; } status = each_next_f(&priv->flocal, delete_func, NULL, priv->stop); ONSTOP(priv->stop, ERROR_STOP); if (ISERR(status)) goto error; status = read_f(true, &priv->fsynced, priv->fdin, priv->stop); ONSTOP(priv->stop, ERROR_STOP); if (ISERR(status)) { status = ERROR_SDNLD; goto error; } } status = preload(priv); if (ISERR(status)) goto error; ONSTOP(priv->stop, ERROR_STOP); if (pthread_create(&upload_param.tid, NULL, upload_thread, &upload_param) != 0) { status = ERROR_SYSTEM; goto error; } status = download(priv); if (ISERR(status)) goto error; if (pthread_join(upload_param.tid, NULL) != 0) { status = ERROR_SYSTEM; goto error; } if (ISERR(upload_param.status)) { status = upload_param.status; goto error; } ONSTOP(priv->stop, ERROR_STOP); status = commit(priv); if (ISERR(status)) goto error; status = save_fsynced(priv); if (ISERR(status)) goto error; ONSTOP(priv->stop, ERROR_STOP); status = 0; error: return status; } PSYNC *psync_new(const char *dirname, time_t expire, volatile sig_atomic_t *stop ) { return (PSYNC *)new_priv(dirname, expire, stop); } void psync_free(PSYNC *psync) { free_priv((PRIV *)psync); } int psync_run(bool master, PSYNC *psync) { return run(master, (PRIV *)psync); } psync/psync_utils.h0000644000175000017500000001221113337000250015153 0ustar kobayasykobayasy/* psync_utils.h - Last modified: 21-Aug-2018 (kobayasy) * * Copyright (c) 2018 by Yuichi Kobayashi * * Permission is hereby granted, free of charge, to any person * obtaining a copy of this software and associated documentation files * (the "Software"), to deal in the Software without restriction, * including without limitation the rights to use, copy, modify, merge, * publish, distribute, sublicense, and/or sell copies of the Software, * and to permit persons to whom the Software is furnished to do so, * subject to the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #ifndef _INCLUDE_psync_utils_h #define _INCLUDE_psync_utils_h #include #include #include #include #define ISERR(_status) ((_status) < 0) #define ONERR(_status, _error) \ do { \ if (ISERR(_status)) { \ status = (_error); \ goto error; \ } \ } while (0) #define ONSTOP(_stop, _error) \ do { \ if ((_stop) != NULL && *(_stop)) { \ status = (_error); \ goto error; \ } \ } while (0) #define WRITE(_data, _fd, _status) \ do { \ uint8_t _buffer[1+sizeof(intmax_t)]; \ size_t _size; \ \ _size = 0; \ if ((_data) < 0) { \ *_buffer = 0x80|0x20; \ while ((_data) < -1) { \ _buffer[++_size] = (_data) & 0xff; \ (_data) >>= 8; \ } \ } \ else { \ *_buffer = 0x80|0x00; \ while ((_data) > 0) { \ _buffer[++_size] = (_data) & 0xff; \ (_data) >>= 8; \ } \ } \ *_buffer |= _size++; \ if (write_sp((_fd), _buffer, _size) != _size) { \ (_status) = INT_MIN; \ break; \ } \ (_status) = 0; \ } while (0) #define READ(_data, _fd, _status) \ do { \ uint8_t _buffer[1+sizeof(intmax_t)]; \ size_t _size; \ \ if (read_sp((_fd), _buffer, 1) != 1) { \ (_status) = INT_MIN; \ break; \ } \ if ((*_buffer & 0xc0) != 0x80) { \ (_status) = INT_MIN; \ break; \ } \ _size = *_buffer & 0x1f; \ if (_size > sizeof(_data)) { \ (_status) = INT_MIN; \ break; \ } \ (_data) = *_buffer & 0x20 ? -1 : 0; \ if (_size > 0) { \ if (read_sp((_fd), _buffer + 1, _size) != _size) { \ (_status) = INT_MIN; \ break; \ } \ do { \ (_data) <<= 8; \ (_data) |= _buffer[_size--]; \ } while (_size > 0); \ } \ (_status) = 0; \ } while (0) extern ssize_t write_sp(int fd, const void *buf, size_t count); extern ssize_t read_sp(int fd, void *buf, size_t count); #define WRITE_ONERR(_data, _fd, _error) \ do { \ int _status; \ \ WRITE((_data), (_fd), _status); \ if (ISERR(_status)) { \ status = (_error); \ goto error; \ } \ } while (0) #define READ_ONERR(_data, _fd, _error) \ do { \ int _status; \ \ READ((_data), (_fd), _status); \ if (ISERR(_status)) { \ status = (_error); \ goto error; \ } \ } while (0) #define LIST_NEW(_list) \ do { \ *(_list)->name = 0; \ (_list)->next = (_list), (_list)->prev = (_list); \ } while (0) #define LIST_DELETE(_p) \ do { \ (_p)->prev->next = (_p)->next, (_p)->next->prev = (_p)->prev; \ } while (0) #define LIST_INSERT_NEXT(_p, _list) \ do { \ (_p)->prev = (_list), (_p)->next = (_list)->next; \ (_list)->next->prev = (_p), (_list)->next = (_p); \ } while (0) #define LIST_INSERT_PREV(_p, _list) \ do { \ (_p)->next = (_list), (_p)->prev = (_list)->prev; \ (_list)->prev->next = (_p), (_list)->prev = (_p); \ } while (0) #define LIST_SEEK_NEXT(_p, _name, _seek) \ do { \ while (strcmp_sp((_p)->next->name, (_name)) <= 0) \ (_p) = (_p)->next; \ while (((_seek) = strcmp((_p)->name, (_name))) > 0) \ (_p) = (_p)->prev; \ } while (0) #define LIST_SEEK_PREV(_p, _name, _seek) \ do { \ while (strcmp((_p)->prev->name, (_name)) >= 0) \ (_p) = (_p)->prev; \ while (((_seek) = strcmp_sp((_p)->name, (_name))) < 0) \ (_p) = (_p)->next; \ } while (0) extern int strcmp_sp(const char *s1, const char *s2); #endif /* #ifndef _INCLUDE_psync_utils_h */ psync/psync.h0000644000175000017500000000433313340206731013747 0ustar kobayasykobayasy/* psync.h - Last modified: 24-Aug-2018 (kobayasy) * * Copyright (c) 2018 by Yuichi Kobayashi * * Permission is hereby granted, free of charge, to any person * obtaining a copy of this software and associated documentation files * (the "Software"), to deal in the Software without restriction, * including without limitation the rights to use, copy, modify, merge, * publish, distribute, sublicense, and/or sell copies of the Software, * and to permit persons to whom the Software is furnished to do so, * subject to the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #ifndef _INCLUDE_psync_h #define _INCLUDE_psync_h #include #include //#define ERROR_UNKNOWN (-1) #define ERROR_FTYPE (-2) #define ERROR_FPERM (-3) #define ERROR_FMAKE (-4) #define ERROR_FOPEN (-5) #define ERROR_FWRITE (-6) #define ERROR_FREAD (-7) #define ERROR_FLINK (-8) #define ERROR_FREMOVE (-9) #define ERROR_FMOVE (-10) #define ERROR_SWRITE (-11) #define ERROR_SREAD (-12) #define ERROR_SUPLD (-13) #define ERROR_SDNLD (-14) #define ERROR_FUPLD (-15) #define ERROR_FDNLD (-16) #define ERROR_DMAKE (-17) #define ERROR_DOPEN (-18) #define ERROR_DWRITE (-19) #define ERROR_DREAD (-20) #define ERROR_MEMORY (-21) #define ERROR_SYSTEM (-22) #define ERROR_STOP (-23) typedef struct { time_t expire; int fdin, fdout; int info; } PSYNC; extern PSYNC *psync_new(const char *dirname, time_t expire, volatile sig_atomic_t *stop ); extern void psync_free(PSYNC *psync); extern int psync_run(bool master, PSYNC *psync); #endif /* #ifndef _INCLUDE_psync_h */ psync/popen3.c0000644000175000017500000000632213334621046014015 0ustar kobayasykobayasy/* popen3.c - Last modified: 15-Aug-2018 (kobayasy) * * Copyright (c) 2018 by Yuichi Kobayashi * * Permission is hereby granted, free of charge, to any person * obtaining a copy of this software and associated documentation files * (the "Software"), to deal in the Software without restriction, * including without limitation the rights to use, copy, modify, merge, * publish, distribute, sublicense, and/or sell copies of the Software, * and to permit persons to whom the Software is furnished to do so, * subject to the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include #include #include "popen3.h" int popen3(char *const argv[], int (*func)(int fdin, int fdout, int fderr, pid_t pid, void *data), void *data ) { int status = INT_MIN; int stdin_pipe[2] = {-1, -1}; int stdout_pipe[2] = {-1, -1}; int stderr_pipe[2] = {-1, -1}; pid_t pid; if (pipe(stdin_pipe) == -1) goto error; if (pipe(stdout_pipe) == -1) goto error; if (pipe(stderr_pipe) == -1) goto error; pid = fork(); if (pid == -1) goto error; if (pid == 0) { close(stdin_pipe[1]), stdin_pipe[1] = -1; close(stdout_pipe[0]), stdout_pipe[0] = -1; close(stderr_pipe[0]), stderr_pipe[0] = -1; if (stdin_pipe[0] != STDIN_FILENO) { dup2(stdin_pipe[0], STDIN_FILENO); close(stdin_pipe[0]), stdin_pipe[0] = -1; } if (stdout_pipe[1] != STDOUT_FILENO) { dup2(stdout_pipe[1], STDOUT_FILENO); close(stdout_pipe[1]), stdout_pipe[1] = -1; } if (stderr_pipe[1] != STDERR_FILENO) { dup2(stderr_pipe[1], STDERR_FILENO); close(stderr_pipe[1]), stderr_pipe[1] = -1; } execvp(argv[0], argv); goto error; } close(stdin_pipe[0]), stdin_pipe[0] = -1; close(stdout_pipe[1]), stdout_pipe[1] = -1; close(stderr_pipe[1]), stderr_pipe[1] = -1; status = func(stdin_pipe[1], stdout_pipe[0], stderr_pipe[0], pid, data); close(stdin_pipe[1]), stdin_pipe[1] = -1; close(stdout_pipe[0]), stdout_pipe[0] = -1; close(stderr_pipe[0]), stderr_pipe[0] = -1; error: if (stdin_pipe[0] != -1) close(stdin_pipe[0]); if (stdin_pipe[1] != -1) close(stdin_pipe[1]); if (stdout_pipe[0] != -1) close(stdout_pipe[0]); if (stdout_pipe[1] != -1) close(stdout_pipe[1]); if (stderr_pipe[0] != -1) close(stderr_pipe[0]); if (stderr_pipe[1] != -1) close(stderr_pipe[1]); return status; } psync/popen3.h0000644000175000017500000000275013330347624014026 0ustar kobayasykobayasy/* popen3.h - Last modified: 08-Jul-2018 (kobayasy) * * Copyright (c) 2018 by Yuichi Kobayashi * * Permission is hereby granted, free of charge, to any person * obtaining a copy of this software and associated documentation files * (the "Software"), to deal in the Software without restriction, * including without limitation the rights to use, copy, modify, merge, * publish, distribute, sublicense, and/or sell copies of the Software, * and to permit persons to whom the Software is furnished to do so, * subject to the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #ifndef _INCLUDE_popen3_h #define _INCLUDE_popen3_h extern int popen3(char *const argv[], int (*func)(int fdin, int fdout, int fderr, pid_t pid, void *data), void *data ); #endif /* #ifndef _INCLUDE_popen3_h */ psync/main.c0000644000175000017500000005754113356177040013552 0ustar kobayasykobayasy/* main.c - Last modified: 02-Oct-2018 (kobayasy) * * Copyright (c) 2018 by Yuichi Kobayashi * * Permission is hereby granted, free of charge, to any person * obtaining a copy of this software and associated documentation files * (the "Software"), to deal in the Software without restriction, * including without limitation the rights to use, copy, modify, merge, * publish, distribute, sublicense, and/or sell copies of the Software, * and to permit persons to whom the Software is furnished to do so, * subject to the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include "psync_utils.h" #include "psync.h" #include "popen3.h" #define VERSION "1.6" #define PROTID 0x01705370 /* 'p', 'S', 'p', 1 */ #define CONFFILE ".psync.conf" #define EXPIRE_DEFAULT 400 /* [days] */ static const char *errmes(int status) { static const char *mes[] = { [0] = "No error", [1] = "Unknown", [-ERROR_FTYPE] = "File type", [-ERROR_FPERM] = "File permission", [-ERROR_FMAKE] = "Make file", [-ERROR_FOPEN] = "Open file", [-ERROR_FWRITE] = "Write file", [-ERROR_FREAD] = "Read file", [-ERROR_FLINK] = "Link file", [-ERROR_FREMOVE] = "Remove file", [-ERROR_FMOVE] = "Move file", [-ERROR_SWRITE] = "Write file-stat", [-ERROR_SREAD] = "Read file-stat", [-ERROR_SUPLD] = "Upload file-stat", [-ERROR_SDNLD] = "Download file-stat", [-ERROR_FUPLD] = "Upload file", [-ERROR_FDNLD] = "Download file", [-ERROR_DMAKE] = "Make data-file", [-ERROR_DOPEN] = "Open data-file", [-ERROR_DWRITE] = "Write data-file", [-ERROR_DREAD] = "Read data-file", [-ERROR_MEMORY] = "Memory", [-ERROR_SYSTEM] = "System", [-ERROR_STOP] = "Interrupted" }; int n; if (!ISERR(status)) n = 0; else if (status < -(sizeof(mes)/sizeof(mes[0]))) n = 1; else n = -status; return mes[n]; } typedef struct { struct { bool set; struct sigaction act; } sighup, sigint, sigterm, sigpipe; } SIGACT; static void sigactinit(SIGACT *oldact) { oldact->sighup.set = false; oldact->sigint.set = false; oldact->sigterm.set = false; oldact->sigpipe.set = false; } static void sigactreset(SIGACT *oldact) { if (oldact->sighup.set) sigaction(SIGHUP, &oldact->sighup.act, NULL), oldact->sighup.set = false; if (oldact->sigint.set) sigaction(SIGINT, &oldact->sigint.act, NULL), oldact->sigint.set = false; if (oldact->sigterm.set) sigaction(SIGTERM, &oldact->sigterm.act, NULL), oldact->sigterm.set = false; if (oldact->sigpipe.set) sigaction(SIGPIPE, &oldact->sigpipe.act, NULL), oldact->sigpipe.set = false; } static int sigactset(void (*handler)(int signo), SIGACT *oldact) { int status = INT_MIN; struct sigaction act; act.sa_handler = handler; act.sa_flags = 0; if (sigemptyset(&act.sa_mask) == -1) { status = -1; goto error; } if (sigaction(SIGHUP, &act, &oldact->sighup.act) == -1) { sigactreset(oldact); status = -1; goto error; } oldact->sighup.set = true; if (sigaction(SIGINT, &act, &oldact->sigint.act) == -1) { sigactreset(oldact); status = -1; goto error; } oldact->sigint.set = true; if (sigaction(SIGTERM, &act, &oldact->sigterm.act) == -1) { sigactreset(oldact); status = -1; goto error; } oldact->sigterm.set = true; if (sigaction(SIGPIPE, &act, &oldact->sigpipe.act) == -1) { sigactreset(oldact); status = -1; goto error; } oldact->sigpipe.set = true; status = 0; error: return status; } typedef struct s_clist { struct s_clist *next, *prev; char *dirname; time_t expire; char name[1]; } CLIST; static CLIST *new_c(CLIST *clist) { LIST_NEW(clist); clist->dirname = clist->name; clist->expire = 0; return clist; } static CLIST *add_c(CLIST *clist, const char *name, const char *dirname) { CLIST *cnew = NULL; size_t length; if (!*name) goto error; length = strlen(name) + 1; cnew = malloc(offsetof(CLIST, name) + length + strlen(dirname) + 1); if (cnew == NULL) goto error; strcpy(cnew->name, name); cnew->dirname = strcpy(cnew->name + length, dirname); cnew->expire = 0; LIST_INSERT_NEXT(cnew, clist); error: return cnew; } static int each_next_c(CLIST *clist, int (*func)(CLIST *c, void *data), void *data, volatile sig_atomic_t *stop ) { int status = INT_MIN; CLIST *c = clist; CLIST *cnext; if (*c->name) goto error; c = clist->next; while (*c->name) { ONSTOP(stop, -1); cnext = c->next; status = func(c, data); if (ISERR(status)) goto error; c = cnext; } status = 0; error: return status; } #if 0 // not used static int each_prev_c(CLIST *clist, int (*func)(CLIST *c, void *data), void *data, volatile sig_atomic_t *stop ) { int status = INT_MIN; CLIST *c = clist; CLIST *cprev; if (*c->name) goto error; c = clist->prev; while (*c->name) { ONSTOP(stop, -1); cprev = c->prev; status = func(c, data); if (ISERR(status)) goto error; c = cprev; } status = 0; error: return status; } #endif /* #if 0 // not used */ static int delete_func(CLIST *c, void *data) { int status = INT_MIN; LIST_DELETE(c); free(c); status = 0; return status; } #define CONFBUF 1024 #define CONFTOK " \t\r\n" #define CONFREM '#' static int get_clist(CLIST *clist, const char *confname) { int status = INT_MIN; FILE *fp = NULL; unsigned int line; char buffer[CONFBUF], *s; char *argv[CONFBUF/2]; unsigned int argc; int seek; fp = fopen(confname, "r"); if (fp == NULL) { fprintf(stderr, "Error: Can not open \"~/%s\".\n", confname); status = -1; goto error; } line = 0; while (fgets(buffer, sizeof(buffer), fp)) { ++line; s = strchr(buffer, CONFREM); if (s != NULL) *s = 0; s = strtok(buffer, CONFTOK); argv[argc = 0] = s; while (s != NULL) { s = strtok(NULL, CONFTOK); argv[++argc] = s; } switch (argc) { case 0: break; case 1: fprintf(stderr, "Error: Line %u in \"~/%s\": Too few parameters \"%s\".\n", line, confname, argv[0]); status = -1; goto error; case 2: case 3: LIST_SEEK_NEXT(clist, argv[0], seek); if (!seek) { fprintf(stderr, "Error: Line %u in \"~/%s\": Redefined \"%s\".\n", line, confname, argv[0]); status = -1; goto error; } clist = add_c(clist, argv[0], argv[1]); if (clist == NULL) { fprintf(stderr, "Error: Out of memory.\n"); status = -1; goto error; } if (argv[2] != NULL) { clist->expire = strtoll(argv[2], &s, 10); if (*s) { fprintf(stderr, "Error: Line %u in \"~/%s\": Invarid parameter \"%s\".\n", line, confname, argv[2]); status = -1; goto error; } } else clist->expire = EXPIRE_DEFAULT; break; default: fprintf(stderr, "Error: Line %u in \"~/%s\": Too many parameters \"%s\".\n", line, confname, argv[2]); status = -1; goto error; } } status = 0; error: if (fp != NULL) fclose(fp); return status; } static int greeting(int fdin, int fdout) { int status = INT_MIN; uint32_t id = PROTID; WRITE_ONERR(id, fdout, -1); READ_ONERR(id, fdin, -1); if (id != PROTID) { status = -1; goto error; } status = 0; error: return status; } #define INFOBUFFER_SIZE 256 typedef struct { void (*func)(const char *s); int fd; } INFO_PARAM; static void *info_thread(void *data) { INFO_PARAM *param = data; char buffer[INFOBUFFER_SIZE], *w, *s, *r; size_t size; ssize_t n; w = buffer, size = sizeof(buffer)-1; n = read(param->fd, w, size); if (n == -1) goto error; while (n > 0) { w[n] = 0, s = strchr(w, '\n'); w += n, size -= n; if (s != NULL) { r = buffer; do { *s++ = 0; param->func(r); s = strchr(r = s, '\n'); } while (s != NULL); n = r - buffer; w -= n, size += n; strcpy(buffer, r); } n = read(param->fd, w, size); if (n == -1) goto error; } error: return NULL; } #define STATUS_NOTREADYLOCAL 1 #define STATUS_NOTREADYREMOTE 2 #define STATUS_PROTOCOLERROR -101 #define STATUS_HANDSHAKEERROR -102 #define STATUS_SYSTEMERROR -103 #define STATUS_ARGUMENTERROR -201 #define STATUS_ENVIRONMENTERROR -202 #define STATUS_CONFFILEERROR -203 #define PROGRESS_BUFFER 256 static void info_func(const char *message) { static struct { intmax_t size; int length; char header[PROGRESS_BUFFER]; char body[PROGRESS_BUFFER]; } upload, download; static unsigned int newline = 1; int n; char *p; intmax_t progress; switch (*message++) { case 'L': if (strchr("+-", *message) != NULL) { n = strtol(message, &p, 10); message = p; if (strchr("+-", *message) == NULL) { while (strchr(" ", *message) != NULL) ++message; switch (n) { case 0: if (!newline) fputc('\n', stdout), newline = 1; break; case STATUS_NOTREADYLOCAL: fputs("\n Skip, local not ready.\n" + newline, stdout), newline = 1; break; case STATUS_NOTREADYREMOTE: fputs("\n Skip, remote not ready.\n" + newline, stdout), newline = 1; break; default: if (ISERR(n)) fprintf(stdout, "\n Local error: %s\n" + newline, errmes(n)), newline = 1; else fprintf(stdout, "\n Local done: %d\n" + newline, n), newline = 1; } } } else { while (strchr(" ", *message) != NULL) ++message; fprintf(stdout, "\n%s\n" + newline, message), newline = 1; } break; case 'R': if (strchr("+-", *message) != NULL) { n = strtol(message, &p, 10); message = p; if (strchr("+-", *message) == NULL) { while (strchr(" ", *message) != NULL) ++message; switch (n) { case 0: case STATUS_NOTREADYLOCAL: case STATUS_NOTREADYREMOTE: break; default: if (ISERR(n)) fprintf(stdout, "\n Remote error: %s (%s)\n" + newline, errmes(n), message), newline = 1; else fprintf(stdout, "\n Remote done: %d (%s)\n" + newline, n, message), newline = 1; } } } break; case 'P': if (strchr("+-", *message) != NULL) { upload.size = strtoll(message, &p, 10); upload.length = p - message - 1; message = p; if (upload.size > 0) { n = upload.length * 2 + 1; sprintf(upload.header, " %-*.*s", n, n, "Upload"); progress = 0; sprintf(upload.body, " %*jd/%*jd", upload.length, progress, upload.length, upload.size); } else { *upload.header = 0; *upload.body = 0; } } if (strchr("+-", *message) != NULL) { download.size = strtoll(message, &p, 10); download.length = p - message - 1; message = p; if (download.size > 0) { n = download.length * 2 + 1; sprintf(download.header, " %-*.*s", n, n, "Download"); progress = 0; sprintf(download.body, " %*jd/%*jd", download.length, progress, download.length, download.size); } else { *download.header = 0; *download.body = 0; } } break; case 'U': if (strchr("+-", *message) != NULL) { progress = strtoll(message, &p, 10); message = p; sprintf(upload.body, " %*jd/%*jd", upload.length, progress, upload.length, upload.size); if (newline) fprintf(stdout, " %s%s\n", upload.header, download.header); fprintf(stdout, "\r %s%s" + newline, upload.body, download.body), newline = 0; fflush(stdout); } break; case 'D': if (strchr("+-", *message) != NULL) { progress = strtoll(message, &p, 10); message = p; sprintf(download.body, " %*jd/%*jd", download.length, progress, download.length, download.size); if (newline) fprintf(stdout, " %s%s\n", upload.header, download.header); fprintf(stdout, "\r %s%s" + newline, upload.body, download.body), newline = 0; fflush(stdout); } break; } } static struct { volatile sig_atomic_t stop; int verbose; } g = { .stop = 0, .verbose = 1 }; static void sighandler(int signo) { g.stop = 1; } typedef struct { int fdin, fdout; int info; } RUN_PARAM; static int run_local_func(CLIST *clist, void *data) { int status = INT_MIN; RUN_PARAM *param = data; SIGACT oldact; size_t length, n; int rack, lack; char buffer[128]; PSYNC *psync = NULL; sigactinit(&oldact); n = length = strlen(clist->name); WRITE_ONERR(n, param->fdout, STATUS_HANDSHAKEERROR); if (write_sp(param->fdout, clist->name, length) != length) { status = STATUS_HANDSHAKEERROR; goto error; } READ_ONERR(rack, param->fdin, STATUS_HANDSHAKEERROR); if (!rack) { if (g.verbose > 0) { length = sprintf(buffer, "L%s\n", clist->name); write(param->info, buffer, length); } ONERR(sigactset(sighandler, &oldact), STATUS_SYSTEMERROR); psync = psync_new(clist->dirname, clist->expire * (60*60*24), &g.stop); lack = psync == NULL ? -1 : 0; WRITE_ONERR(lack, param->fdout, STATUS_HANDSHAKEERROR); READ_ONERR(rack, param->fdin, STATUS_HANDSHAKEERROR); if (!lack) { if (!rack) { psync->fdin = param->fdin, psync->fdout = param->fdout; if (g.verbose > 1) psync->info = param->info; status = psync_run(true, psync); } else status = STATUS_NOTREADYREMOTE; psync_free(psync), psync = NULL; } else status = STATUS_NOTREADYLOCAL; sigactreset(&oldact); if (g.verbose > 0) { length = sprintf(buffer, "L%+d %s\n", status, clist->name); write(param->info, buffer, length); } if (ISERR(status)) goto error; } else status = 0; error: if (psync != NULL) psync_free(psync); sigactreset(&oldact); return status; } static int run_local(int fdin, int fdout, int fderr, pid_t pid, void *data) { int status = INT_MIN; CLIST *clist = data; RUN_PARAM run_param = {fdout, fdin, -1}; INFO_PARAM rinfo_param = {info_func, -1}; pthread_t rinfo_tid; int info_pipe[2] = {-1, -1}; INFO_PARAM linfo_param = {info_func, -1}; pthread_t linfo_tid; size_t length; ONERR(greeting(run_param.fdin, run_param.fdout), STATUS_PROTOCOLERROR); if (g.verbose) { rinfo_param.fd = fderr; if (pthread_create(&rinfo_tid, NULL, info_thread, &rinfo_param) != 0) { status = STATUS_SYSTEMERROR; goto error; } if (pipe(info_pipe) == -1) { status = STATUS_SYSTEMERROR; goto error; } linfo_param.fd = info_pipe[0]; if (pthread_create(&linfo_tid, NULL, info_thread, &linfo_param) != 0) { status = STATUS_SYSTEMERROR; goto error; } run_param.info = info_pipe[1]; } status = each_next_c(clist, run_local_func, &run_param, NULL); if (ISERR(status)) goto error; length = 0; WRITE_ONERR(length, run_param.fdout, STATUS_HANDSHAKEERROR); if (g.verbose) { close(info_pipe[1]), info_pipe[1] = -1; if (pthread_join(linfo_tid, NULL) != 0) { status = STATUS_SYSTEMERROR; goto error; } close(info_pipe[0]), info_pipe[0] = -1; if (pthread_join(rinfo_tid, NULL) != 0) { status = STATUS_SYSTEMERROR; goto error; } } error: if (g.verbose) { if (info_pipe[0] != -1) close(info_pipe[0]), info_pipe[0] = -1; if (info_pipe[1] != -1) close(info_pipe[1]), info_pipe[1] = -1; } if (pid != 0) waitpid(pid, NULL, 0); return status; } static int run_remote(int fdin, int fdout, int fderr, pid_t pid, void *data) { int status = INT_MIN; CLIST *clist = data; SIGACT oldact; size_t length; char name[CONFBUF]; int seek; int lack, rack; PSYNC *psync = NULL; sigactinit(&oldact); ONERR(greeting(fdin, fdout), STATUS_PROTOCOLERROR); READ_ONERR(length, fdin, STATUS_HANDSHAKEERROR); while (length > 0) { if (length > sizeof(name)-1) { status = STATUS_SYSTEMERROR; goto error; } if (read_sp(fdin, name, length) != length) { status = STATUS_HANDSHAKEERROR; goto error; } name[length] = 0; LIST_SEEK_NEXT(clist, name, seek); lack = seek ? -1 : 0; WRITE_ONERR(lack, fdout, STATUS_HANDSHAKEERROR); if (!lack) { fprintf(stderr, "R%s\n", clist->name); ONERR(sigactset(sighandler, &oldact), STATUS_SYSTEMERROR); psync = psync_new(clist->dirname, clist->expire * (60*60*24), &g.stop); lack = psync == NULL ? -1 : 0; WRITE_ONERR(lack, fdout, STATUS_HANDSHAKEERROR); READ_ONERR(rack, fdin, STATUS_HANDSHAKEERROR); if (!lack) { if (!rack) { psync->fdin = fdin, psync->fdout = fdout; status = psync_run(false, psync); } else status = STATUS_NOTREADYREMOTE; psync_free(psync), psync = NULL; } else status = STATUS_NOTREADYLOCAL; sigactreset(&oldact); fprintf(stderr, "R%+d %s\n", status, clist->name); if (ISERR(status)) goto error; } READ_ONERR(length, fdin, STATUS_HANDSHAKEERROR); } status = 0; error: if (psync != NULL) psync_free(psync); sigactreset(&oldact); if (pid != 0) waitpid(pid, NULL, 0); return status; } int main(int argc, char *argv[]) { int status = INT_MIN; char *argv0 = *argv; CLIST clist; enum {MODE_HELP, MODE_RUN, MODE_ERROR} mode = MODE_HELP; char *args[] = {"ssh", "-qC", NULL, "psync", "--remote", 0}; char *s; new_c(&clist); while (*++argv) if (**argv == '-') { if (!strcmp(*argv, "--help")) { mode = MODE_HELP; break; } else if (!strcmp(*argv, "--remote")) { mode = MODE_RUN; args[2] = NULL; } else if (!strcmp(*argv, "-q") || !strcmp(*argv, "--quiet") ) g.verbose = 0; else if (!strcmp(*argv, "-v") || !strcmp(*argv, "--verbose") ) g.verbose = 2; else { fprintf(stderr, "Error: Invarid option: %s\n", *argv); mode = MODE_ERROR; status = STATUS_ARGUMENTERROR; break; } } else if (args[2] == NULL) { mode = MODE_RUN; args[2] = *argv; } else { fprintf(stderr, "Error: Invarid argument: %s\n", *argv); mode = MODE_ERROR; status = STATUS_ARGUMENTERROR; break; } s = getenv("HOME"); if (s == NULL){ fputs("Error: $HOME is not set.\n", stderr); mode = MODE_ERROR; status = STATUS_ENVIRONMENTERROR; } else if (chdir(s) == -1) { fprintf(stderr, "Error: Can not change diractory to %s\n", s); mode = MODE_ERROR; status = STATUS_ENVIRONMENTERROR; } else if (ISERR(get_clist(&clist, CONFFILE))) { mode = MODE_ERROR; status = STATUS_CONFFILEERROR; } switch (mode) { case MODE_RUN: if (args[2] != NULL) { status = popen3(args, run_local, &clist); switch (status) { case STATUS_PROTOCOLERROR: fputs("Error: Protocol\n", stderr); break; case STATUS_HANDSHAKEERROR: fputs("Error: Handshake\n", stderr); break; case STATUS_SYSTEMERROR: fputs("Error: System\n", stderr); break; } } else status = run_remote(STDIN_FILENO, STDOUT_FILENO, STDERR_FILENO, 0, &clist); break; case MODE_ERROR: fputc('\n', stdout); default: s = basename(argv0); fprintf(stdout, "pSync version %s (protocol %c%c%c%u)\n", VERSION, PROTID, PROTID >> 8, PROTID >> 16, PROTID >> 24 ); fputc('\n', stdout); fprintf(stdout, "Usage: %s [-v|-q] [USER@]HOST\n", s); fprintf(stdout, " %s --help\n", s); fputc('\n', stdout); fputs("USER@HOST\n", stdout); fputs(" HOST hostname\n", stdout); fputs(" USER username (default: current login user)\n", stdout); fputc('\n', stdout); fputs("subcommand\n", stdout); fputs(" --help show this help\n", stdout); fputc('\n', stdout); fputs("options\n", stdout); fputs(" -v, --verbose increase verbosity\n", stdout); fputs(" -q, --quiet suppress non-error messages\n", stdout); fputc('\n', stdout); } each_next_c(&clist, delete_func, NULL, NULL); if (status < 0) status = status < -255 ? 255 : -status; else status = 0; return status; } psync/psync.10000644000175000017500000002117613356333036013672 0ustar kobayasykobayasy./" psync.1 - Last modified: 07-Oct-2018 (kobayasy) ./" ./" Copyright (c) 2018 by Yuichi Kobayashi ./" ./" Permission is hereby granted, free of charge, to any person ./" obtaining a copy of this software and associated documentation files ./" (the "Software"), to deal in the Software without restriction, ./" including without limitation the rights to use, copy, modify, merge, ./" publish, distribute, sublicense, and/or sell copies of the Software, ./" and to permit persons to whom the Software is furnished to do so, ./" subject to the following conditions: ./" ./" The above copyright notice and this permission notice shall be ./" included in all copies or substantial portions of the Software. ./" ./" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ./" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ./" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ./" NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS ./" BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ./" ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN ./" CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE ./" SOFTWARE. ./" .Dd October 7, 2018 .Dt PSYNC 1 .Os .Sh NAME pSync .Nd ネットワーク双方向ファイル同期ツール。 .Sh SYNOPSIS .Nm psync .Op Fl v | Fl q .Oo Ar USER Ns @ Oc Ns Ar HOST .Nm .Fl -help .Sh DESCRIPTION .Ar USER@HOST で指定した相手とファイル同期を行う。 設定ファイル .Pa ~/.psync.conf で登録されたディレクトリの内、同期元と相手の両方に存在する識別名が付いたディレクトリ内のファイルを同期対象とする。 .Pp .Ar HOST で同期相手のホスト名を、 .Ar USER でそのログイン名を指定する。 .Ar USER は省略可能で、省略した場合は現在ログイン中のユーザー名が指定される。 .Pp 設定ファイルへ同期ディレクトリを登録する方法に付いては .Xr psync.conf 5 で説明しているのでそちらを参照。 .Pp pSync は内部で OpenSSH の .Nm ssh を実行して .Ar HOST で指定したホストに .Ar USER で指定したユーザー名でログインをして同期相手の制御を行う。 OpenSSH のリモートコマンド実行、ユーザー認証、転送データの暗号化と圧縮の機能を利用して、専用のサーバが不要で、セキュアな高速ファイル転送を実現している。 その為、pSync を動作させる前提条件として、OpenSSH で同期相手へログインできる環境と .Nm ssh への実行パスが通っている必要が有る。 同期相手にも pSync のインストールが必要で .Nm ssh でログインした状態で .Nm への実行パスが通っている事。 .Pp pSync は同期相手側としてリモートで起動される場合も含めて複数同時実行が可能であるが、同期処理中のディレクトリに対して重複して同期を始める事は出来ない。 もし、重複するような場合は後から同期を始めようとした側に .Dl Do Skip, local not ready. Dc もしくは .Dl Do Skip, remote not ready. Dc を表示してそのディレクトリに対する同期処理を飛ばす。 同期処理の完了を待つ事はしないので、必要に応じて同期完了を待ってから再度実行をする。 .Sh OPTIONS .Bl -tag -width Ds .It Fl v Ns , Fl -verbose アップロードとダウンロードの進捗情報をリアルタイムに表示する。 .Fl q とは排他の関係に有り、後で指定した方のみが有効となる。 .It Fl q Ns , Fl -quite エラー以外のメッセージ出力を止める。 .Fl v とは排他の関係に有り、後で指定した方のみが有効となる。 .It Fl -help 簡単なヘルプメッセージを表示する。 .El .Sh ENVIRONMENT .Bl -tag -width Ds .It Ev HOME ホームディレクトリを示す環境変数。 設定ファイルはこのディレクトリに置かれる。 同期ディレクトリはここからの相対パスで指定する。 .It Ev PATH 実行パスを設定する環境変数。 .Nm と OpenSSH の .Nm ssh の両方に実行パスが通っている事。 .El .Sh FILES .Bl -tag -width Ds .It Pa ~/.psync.conf pSync の設定ファイル。 詳細は .Xr psync.conf 5 で説明しているのでそちらを参照。 .It Va 同期ディレクトリ Ns Pa /.psync/last 同期情報保存ファイル。 前回同期した時の状態を保持する。 pSync により自動生成される。 削除してはいけない。 .It Va 同期ディレクトリ Ns Pa /.psync/lock/ 同期ディレクトリの排他制御用ロックファイル。 アップロードとダウンロードの一時ファイル置き場も兼ねている。 .Nm の実行中に自動生成され実行終了までに自動削除される。 .Nm の実行が何らかの原因で強制中断した場合、自動削除が動作せずにこのファイルが残ったままになる事が起こり得る。 その場合は手動で削除してロックを解除する必要がある。 .El .Sh EXIT STATUS なにも問題なくファイル同期に成功した場合は .Er 0 を返す。 何らかの原因で処理が中断され、ファイル同期に失敗した場合は .Er 0 以外を返す。 .Er 1 から .Er 99 まではファイル同期動作中の問題、 .Er 101 から .Er 199 まではファイル同期動作前の接続相手への接続かハンドシェーク中の問題、 .Er 201 から .Er 255 までは引数か環境変数の設定、もしくは設定ファイルの問題を示す。 .Pp .Bl -tag -width Ds .It Er 0 Ns , Do \&No error Dc ファイル同期成功。 .It Er 1 Ns , Do Unknown Dc 不明なエラー。 .It Er 2 Ns , Do File type Dc 非対応な種類のファイルが同期ディレクトリ内に存在する。 このエラー原因のファイルは下記コマンドで検出できる。 .Dl find Ar 同期ディレクトリ Li ! -type f \&! -type d \&! -type l .It Er 3 Ns , Do File permission Dc .Ar USER の権限でアクセスできないファイルが同期ディレクトリ内に存在する。 このエラー原因のファイルは下記コマンドで検出できる。 .Dl find Ar 同期ディレクトリ Li -type f \&! -readable -o -type d \&! \e( -readable -writable -executable \e) .It Er 4 Ns , Do Make file Dc 同期ファイルの生成に失敗した。 .It Er 5 Ns , Do Open file Dc 同期ファイルのオープンに失敗した。 .It Er 6 Ns , Do Write file Dc 同期ファイルの書き込みに失敗した。 .It Er 7 Ns , Do Read file Dc 同期ファイルの読み出しに失敗した。 .It Er 8 Ns , Do Link file Dc 同期ファイルのシンボリックリンク生成に失敗した。 .It Er 9 Ns , Do Remove file Dc 同期ファイルの削除に失敗した。 .It Er 10 Ns , Do Move file Dc 同期ファイルの移動に失敗した。 .It Er 11 Ns , Do Write file-stat Dc 同期ファイルの情報読み出しに失敗した。 .It Er 12 Ns , Do Read file-stat Dc 同期ファイルの情報書き込みに失敗した。 .It Er 13 Ns , Do Upload file-stat Dc ファイル情報のアップロードに失敗した。 .It Er 14 Ns , Do Download file-stat Dc ファイル情報のダウンロードに失敗した。 .It Er 15 Ns , Do Upload file Dc ファイルのアップロードに失敗した。 .It Er 16 Ns , Do Download file Dc ファイルのダウンロードに失敗した。 .It Er 17 Ns , Do Make data-file Dc 同期情報保存ファイルの生成に失敗した。 .It Er 18 Ns , Do Open data-file Dc 同期情報保存ファイルのオープンに失敗した。 .It Er 19 Ns , Do Write data-file Dc 同期情報保存ファイルの書き込みに失敗した。 .It Er 20 Ns , Do Read data-file Dc 同期情報保存ファイルの読み出しに失敗した。 .It Er 21 Ns , Do Memory Dc 作業バッファの確保に失敗した。 .It Er 22 Ns , Do System Dc その他の問題により同期処理を中断した。 .It Er 23 Ns , Do Interrupted Dc シグナル(SIGHUP か SIGINT, SIGTERM, SIGPIPE)を受けた。 .It Er 101 Ns , Do Protocol Dc 同期相手との接続に失敗したかプロトコルが合わない。 .It Er 102 Ns , Do Handshake Dc 同期相手とのハンドシェークに失敗した。 .It Er 103 Ns , Do System Dc その他のエラー。 .It Er 201 引数に問題がある。 .It Er 202 環境変数の設定に問題がある。 .It Er 203 設定ファイルに問題がある。 .It Er 255 その他の問題。 .El .Sh SEE ALSO .Xr psync.conf 5 , .Xr ssh 1 .Sh HISTORY pSync は .An "Yuichi Kobayashi" によって MSync (http://kobayasy.com/msync/) をベースに作成されました。 psync/psync.conf.50000644000175000017500000001710313356333050014611 0ustar kobayasykobayasy./" psync.conf.5 - Last modified: 07-Oct-2018 (kobayasy) ./" ./" Copyright (c) 2018 by Yuichi Kobayashi ./" ./" Permission is hereby granted, free of charge, to any person ./" obtaining a copy of this software and associated documentation files ./" (the "Software"), to deal in the Software without restriction, ./" including without limitation the rights to use, copy, modify, merge, ./" publish, distribute, sublicense, and/or sell copies of the Software, ./" and to permit persons to whom the Software is furnished to do so, ./" subject to the following conditions: ./" ./" The above copyright notice and this permission notice shall be ./" included in all copies or substantial portions of the Software. ./" ./" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ./" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ./" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ./" NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS ./" BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ./" ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN ./" CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE ./" SOFTWARE. ./" .Dd October 7, 2018 .Dt PSYNC.CONF 5 .Os .Sh NAME .Nm ~/.psync.conf .Nd pSync の設定ファイル。 .Sh DESCRIPTION .Nm は .Xr psync 1 で同期対象とするディレクトリを、1行にその .Ar 識別名 と .Ar パス名 Ns 、 .Ar 削除履歴保持期間 の3パラメータをこの順番に並べた複数行から成るテキストファイルで、この行を追加する事で同期ディレクトリの追加登録、削除(又はコメントアウト)する事で登録の解除を行う。 .Pp .Bl -tag -width Ds .It Ar 識別名 ディレクトリの内容を示す任意な文字列。 設定ファイル内で一意である事。 .It Ar パス名 同期ディレクトリをホームディレクトリからの相対パスで指定する。 .It Ar 削除履歴保持期間 .Ar ファイル削除履歴 の保持期間を削除されてから何日後までとするかを、10進数文字列で指定する。 このパラメータは省略可能で、省略した場合は400日指定となる。 .Ar ファイル削除履歴 に付いては後で説明するが、とりあえずは省略で問題ない。 .El .Pp 1文字以上の連続したスペース文字(スペースとタブ)を各パラメータのデリミタとして認識する。 .Pp .Sq # はそれ以降から行末までをコメントと認識する。 .Pp スペースとタブはデリミタ、 .Sq # はコメント、改行コードは行末に、それぞれ認識されてしまうので、各パラメータにそれらの文字は使用出来ない。 例えば .Sq # を含んだ .Ar 識別名 や、スペース文字を含んだ .Ar パス名 は指定出来ない。 .Pp 登録されているディレクトリは存在している必要がある。 存在しないディレクトリを新規作成して登録する場合は、先にディレクトリを作成してから設定ファイルへの追加登録を行う事。 同様に登録されているディレクトリを削除したい場合は、先に登録の解除を済ませた後にディレクトリの削除を行う事。 .Ss Ar ファイル削除履歴 「ある同期対象のファイルが同期元と相手とで片側にだけ存在し、もう片方には存在しない。」状態は、「存在する側が対象のファイルを追加した。」か「存在しない側が対象のファイルを削除した。」の2通りが考えられる。 このどちらなのかを判断するためには、過去に同期した時の履歴を残しておく必要がある。 .Pp 2ホスト間の1対1みの同期に限定するならば前回だけの履歴で充分だが、同期ホスト数に制限なく3ホスト以上の間での同期も想定しており、例えば下記の場合だと前回のだけでは8でaの削除を判断出来ない。 そのため、4でaを削除した履歴を短くとも8の時点までは残しておく必要がある。 .Pp この削除した履歴が .Ar ファイル削除履歴 で、それを残しておく期間を .Ar 削除履歴保持期間 で指定する。 .Pp 削除タイミングの予測はできないので、 .Ar ファイル削除履歴 の保持期間は長いほど良い(理想は無期限)が、この履歴はファイル .Va 同期ディレクトリ Ns Pa /.psync/last に保持され、期間を長くするとサイズも大きくなるので、そのサイズとの兼ね合いで調整する。 .Pp Bで作業していて一時的にCで作業した後にBでの作業に戻る例: .Bl -enum -offset indent .It Bにaとbが存在する状態 .It B<->A BのaとbをAに同期 .It C<->A BのaとbをAを経由してCに同期 .It Cでaを削除 .It C<->A Cのaの削除をAに同期 .It Cでbを更新 .It C<->A Cのbの更新をAに同期 .It B<->A Cのaの削除とbの更新をAを経由してBに同期 .El .Pp (アルファベットの大文字はホストを小文字は同期ファイル、<-> は同期動作を示すを示す) .Sh EXAMPLES .Nm への同期ディレクトリの登録と、その同期動作例を示す。 .Bl -enum -offset indent .It 登録ディレクトリが1つだけの設定例 .Pp .Bd -literal -offset indent #識別名 パス名 psync pSync .Ed .Pp 同期ディレクトリ .Pa ~/pSync/ を、 .Ar 識別名 psync で登録。 .Ar 削除履歴保持期間 は省略されているので400日に設定される。 1行目は先頭が .Sq # なので、行全体がコメント文と認識され無視される。 .It 複数のディレクトリを登録する例 .Pp .Bd -literal -offset indent #識別名 パス名 コメント文 private pSync/Private #個人データ work pSync/Work #仕事のデータ .Ed .Pp 同期ディレクトリを個人データの .Pa ~/pSync/Private/ と仕事のデータ .Pa ~/pSync/Work/ とに分けたい場合は、こんな感じに設定する。 .Sq # を行の途中に書くと、それ以降から行末までがコメント文と認識される。 .It .Ar 削除履歴保持期間 を指定する例 .Pp .Bd -literal -offset indent #識別名 パス名 削除履歴保持期間 コメント文 private doc/private #個人データ work doc/work #仕事のデータ public doc/public 1000 #共有データ .Ed .Pp この場合、同期ディレクトリ .Pa ~/doc/public/ の .Ar 削除履歴保持期間 が1000日に設定される。 .El .Pp 例えば、2の設定例と3の設定例のホスト間で同期を行った場合、両方共に存在する .Ar 識別名 は private と work なので、private が示す2のホストのディレクトリ .Pa ~/pSync/Private/ と、3のホストの .Pa ~/doc/private/ が同期され，同様に private が示す2のホストの .Pa ~/pSync/work/ と、3のホストの .Pa ~/doc/work/ も同期される。 .Sh ENVIRONMENT .Bl -tag -width Ds .It Ev HOME ホームディレクトリを示す環境変数。 設定ファイルはこのディレクトリに置かれる。 同期ディレクトリの .Ar パス名 はここからの相対パスで指定する。 .El .Sh FILES .Bl -tag -width Ds .It Va 同期ディレクトリ Ns Pa /.psync/last 同期情報保存ファイル。 前回同期した時の状態を保持する。 .Ar ファイル削除履歴 もここに含まれ、 .Ar 削除履歴保持期間 で指定した期間保持される。 .Xr psync 1 により自動生成される。 削除してはいけない。 .El .Sh SEE ALSO .Xr psync 1 psync/Makefile.in0000644000175000017500000000500513352202226014502 0ustar kobayasykobayasy# @configure_input@ # Makefile.in - Last modified: 21-Sep-2018 (kobayasy) # # Copyright (c) 2018 by Yuichi Kobayashi # # Permission is hereby granted, free of charge, to any person # obtaining a copy of this software and associated documentation files # (the "Software"), to deal in the Software without restriction, # including without limitation the rights to use, copy, modify, merge, # publish, distribute, sublicense, and/or sell copies of the Software, # and to permit persons to whom the Software is furnished to do so, # subject to the following conditions: # # The above copyright notice and this permission notice shall be # included in all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS # BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN # ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE # SOFTWARE. TARGET = @PACKAGE_TARNAME@@EXEEXT@ OBJS = psync.@OBJEXT@ popen3.@OBJEXT@ main.@OBJEXT@ prefix = @prefix@ exec_prefix = @exec_prefix@ bindir = @bindir@ datarootdir = @datarootdir@ mandir = @mandir@ CC = @CC@ CFLAGS = @CFLAGS@ #CFLAGS += -Wall #CFLAGS += -Wno-shift-count-overflow #CFLAGS += -Wno-string-plus-int #CFLAGS += -Wno-tautological-constant-out-of-range-compare DEFS = @DEFS@ LIBS = @LIBS@ INSTALL = @INSTALL@ VPATH = @srcdir@ @SET_MAKE@ all : $(TARGET) $(TARGET) : $(OBJS) $(CC) $(CFLAGS) $(LIBS) -o $@ $^ psync.@OBJEXT@ : psync.c psync_utils.h psync.h popen3.@OBJEXT@ : popen3.c popen3.h main.@OBJEXT@ : main.c psync_utils.h psync.h popen3.h %.@OBJEXT@ : %.c $(CC) $(CFLAGS) $(DEFS) -c $< clean : $(RM) $(TARGET) $(RM) $(OBJS) distclean : clean $(RM) config.log config.status config.cache $(RM) Makefile install : install-bin install-man install-bin : all $(bindir) $(INSTALL) -m755 -s $(TARGET) $(bindir) install-man : all $(mandir)/ja/man1 $(mandir)/ja/man5 $(INSTALL) -m644 @PACKAGE_TARNAME@.1 $(mandir)/ja/man1 $(INSTALL) -m644 psync.conf.5 $(mandir)/ja/man5 uninstall : uninstall-bin uninstall-man uninstall-bin : $(RM) $(bindir)/$(TARGET) uninstall-man : $(RM) $(mandir)/ja/man1/@PACKAGE_TARNAME@.1 $(RM) $(mandir)/ja/man5/psync.conf.5 $(bindir) : $(INSTALL) -m755 -d $@ $(mandir)/ja/man% : $(INSTALL) -m755 -d $@ psync/configure.ac0000644000175000017500000000266413354406173014744 0ustar kobayasykobayasy# configure.ac - Last modified: 01-Oct-2018 (kobayasy) # # Copyright (c) 2018 by Yuichi Kobayashi # # Permission is hereby granted, free of charge, to any person # obtaining a copy of this software and associated documentation files # (the "Software"), to deal in the Software without restriction, # including without limitation the rights to use, copy, modify, merge, # publish, distribute, sublicense, and/or sell copies of the Software, # and to permit persons to whom the Software is furnished to do so, # subject to the following conditions: # # The above copyright notice and this permission notice shall be # included in all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS # BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN # ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE # SOFTWARE. AC_PREREQ(2.69) AC_INIT([pSync], [1.6], [kobayasy@kobayasy.com], [psync], [http://kobayasy.com/psync/]) AC_CONFIG_SRCDIR([psync.c]) AC_PROG_MAKE_SET AC_PROG_CC AC_PROG_INSTALL AC_CHECK_LIB([pthread], [pthread_create]) AC_SYS_LARGEFILE AC_CONFIG_FILES([Makefile]) AC_OUTPUT psync/README.txt0000644000175000017500000000066613357360614014156 0ustar kobayasykobayasyFor example, install to ~/bin/ and ~/share/man/ $ ./configure --prefix=$HOME $ make install $ Then, create and setting sync-directories. $ install -m700 -d ~/pSync/Private $ install -m700 -d ~/pSync/Work $ cat <~/.psync.conf #ID Directory private pSync/Private work pSync/Work EOF $ See also psync(1), psync.conf(5), http://kobayasy.com/psync/ Report bugs to mailto:kobayasy@kobayasy.com with "pSync" in subject. psync/configure0000755000175000017500000035647713357360633014406 0ustar kobayasykobayasy#! /bin/sh # Guess values for system-dependent variables and create Makefiles. # Generated by GNU Autoconf 2.69 for pSync 1.6. # # Report bugs to . # # # Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc. # # # This configure script is free software; the Free Software Foundation # gives unlimited permission to copy, distribute and modify it. ## -------------------- ## ## M4sh Initialization. ## ## -------------------- ## # Be more Bourne compatible DUALCASE=1; export DUALCASE # for MKS sh if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then : emulate sh NULLCMD=: # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which # is contrary to our usage. Disable this feature. alias -g '${1+"$@"}'='"$@"' setopt NO_GLOB_SUBST else case `(set -o) 2>/dev/null` in #( *posix*) : set -o posix ;; #( *) : ;; esac fi as_nl=' ' export as_nl # Printing a long string crashes Solaris 7 /usr/bin/printf. as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\' as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo # Prefer a ksh shell builtin over an external printf program on Solaris, # but without wasting forks for bash or zsh. if test -z "$BASH_VERSION$ZSH_VERSION" \ && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then as_echo='print -r --' as_echo_n='print -rn --' elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then as_echo='printf %s\n' as_echo_n='printf %s' else if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"' as_echo_n='/usr/ucb/echo -n' else as_echo_body='eval expr "X$1" : "X\\(.*\\)"' as_echo_n_body='eval arg=$1; case $arg in #( *"$as_nl"*) expr "X$arg" : "X\\(.*\\)$as_nl"; arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;; esac; expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl" ' export as_echo_n_body as_echo_n='sh -c $as_echo_n_body as_echo' fi export as_echo_body as_echo='sh -c $as_echo_body as_echo' fi # The user is always right. if test "${PATH_SEPARATOR+set}" != set; then PATH_SEPARATOR=: (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 || PATH_SEPARATOR=';' } fi # IFS # We need space, tab and new line, in precisely that order. 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Remove it from $@. for arg do if test -n "$dst_arg"; then # $@ is not empty: it contains at least $arg. set fnord "$@" "$dst_arg" shift # fnord fi shift # arg dst_arg=$arg # Protect names problematic for `test' and other utilities. case $dst_arg in -* | [=\(\)!]) dst_arg=./$dst_arg;; esac done fi if test $# -eq 0; then if test -z "$dir_arg"; then echo "$0: no input file specified." >&2 exit 1 fi # It's OK to call `install-sh -d' without argument. # This can happen when creating conditional directories. exit 0 fi if test -z "$dir_arg"; then do_exit='(exit $ret); exit $ret' trap "ret=129; $do_exit" 1 trap "ret=130; $do_exit" 2 trap "ret=141; $do_exit" 13 trap "ret=143; $do_exit" 15 # Set umask so as not to create temps with too-generous modes. # However, 'strip' requires both read and write access to temps. case $mode in # Optimize common cases. *644) cp_umask=133;; *755) cp_umask=22;; *[0-7]) if test -z "$stripcmd"; then u_plus_rw= else u_plus_rw='% 200' fi cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;; *) if test -z "$stripcmd"; then u_plus_rw= else u_plus_rw=,u+rw fi cp_umask=$mode$u_plus_rw;; esac fi for src do # Protect names problematic for `test' and other utilities. case $src in -* | [=\(\)!]) src=./$src;; esac if test -n "$dir_arg"; then dst=$src dstdir=$dst test -d "$dstdir" dstdir_status=$? else # Waiting for this to be detected by the "$cpprog $src $dsttmp" command # might cause directories to be created, which would be especially bad # if $src (and thus $dsttmp) contains '*'. if test ! -f "$src" && test ! -d "$src"; then echo "$0: $src does not exist." >&2 exit 1 fi if test -z "$dst_arg"; then echo "$0: no destination specified." >&2 exit 1 fi dst=$dst_arg # If destination is a directory, append the input filename; won't work # if double slashes aren't ignored. if test -d "$dst"; then if test -n "$no_target_directory"; then echo "$0: $dst_arg: Is a directory" >&2 exit 1 fi dstdir=$dst dst=$dstdir/`basename "$src"` dstdir_status=0 else # Prefer dirname, but fall back on a substitute if dirname fails. dstdir=` (dirname "$dst") 2>/dev/null || expr X"$dst" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ X"$dst" : 'X\(//\)[^/]' \| \ X"$dst" : 'X\(//\)$' \| \ X"$dst" : 'X\(/\)' \| . 2>/dev/null || echo X"$dst" | sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/ q } /^X\(\/\/\)[^/].*/{ s//\1/ q } /^X\(\/\/\)$/{ s//\1/ q } /^X\(\/\).*/{ s//\1/ q } s/.*/./; q' ` test -d "$dstdir" dstdir_status=$? fi fi obsolete_mkdir_used=false if test $dstdir_status != 0; then case $posix_mkdir in '') # Create intermediate dirs using mode 755 as modified by the umask. # This is like FreeBSD 'install' as of 1997-10-28. umask=`umask` case $stripcmd.$umask in # Optimize common cases. *[2367][2367]) mkdir_umask=$umask;; .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;; *[0-7]) mkdir_umask=`expr $umask + 22 \ - $umask % 100 % 40 + $umask % 20 \ - $umask % 10 % 4 + $umask % 2 `;; *) mkdir_umask=$umask,go-w;; esac # With -d, create the new directory with the user-specified mode. # Otherwise, rely on $mkdir_umask. if test -n "$dir_arg"; then mkdir_mode=-m$mode else mkdir_mode= fi posix_mkdir=false case $umask in *[123567][0-7][0-7]) # POSIX mkdir -p sets u+wx bits regardless of umask, which # is incompatible with FreeBSD 'install' when (umask & 300) != 0. ;; *) tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$ trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0 if (umask $mkdir_umask && exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1 then if test -z "$dir_arg" || { # Check for POSIX incompatibilities with -m. # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or # other-writeable bit of parent directory when it shouldn't. # FreeBSD 6.1 mkdir -m -p sets mode of existing directory. ls_ld_tmpdir=`ls -ld "$tmpdir"` case $ls_ld_tmpdir in d????-?r-*) different_mode=700;; d????-?--*) different_mode=755;; *) false;; esac && $mkdirprog -m$different_mode -p -- "$tmpdir" && { ls_ld_tmpdir_1=`ls -ld "$tmpdir"` test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1" } } then posix_mkdir=: fi rmdir "$tmpdir/d" "$tmpdir" else # Remove any dirs left behind by ancient mkdir implementations. rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null fi trap '' 0;; esac;; esac if $posix_mkdir && ( umask $mkdir_umask && $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir" ) then : else # The umask is ridiculous, or mkdir does not conform to POSIX, # or it failed possibly due to a race condition. Create the # directory the slow way, step by step, checking for races as we go. case $dstdir in /*) prefix='/';; [-=\(\)!]*) prefix='./';; *) prefix='';; esac eval "$initialize_posix_glob" oIFS=$IFS IFS=/ $posix_glob set -f set fnord $dstdir shift $posix_glob set +f IFS=$oIFS prefixes= for d do test X"$d" = X && continue prefix=$prefix$d if test -d "$prefix"; then prefixes= else if $posix_mkdir; then (umask=$mkdir_umask && $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break # Don't fail if two instances are running concurrently. test -d "$prefix" || exit 1 else case $prefix in *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;; *) qprefix=$prefix;; esac prefixes="$prefixes '$qprefix'" fi fi prefix=$prefix/ done if test -n "$prefixes"; then # Don't fail if two instances are running concurrently. (umask $mkdir_umask && eval "\$doit_exec \$mkdirprog $prefixes") || test -d "$dstdir" || exit 1 obsolete_mkdir_used=true fi fi fi if test -n "$dir_arg"; then { test -z "$chowncmd" || $doit $chowncmd "$dst"; } && { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } && { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false || test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1 else # Make a couple of temp file names in the proper directory. dsttmp=$dstdir/_inst.$$_ rmtmp=$dstdir/_rm.$$_ # Trap to clean up those temp files at exit. trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0 # Copy the file name to the temp name. (umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") && # and set any options; do chmod last to preserve setuid bits. # # If any of these fail, we abort the whole thing. If we want to # ignore errors from any of these, just make sure not to ignore # errors from the above "$doit $cpprog $src $dsttmp" command. # { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } && { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } && { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } && { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } && # If -C, don't bother to copy if it wouldn't change the file. if $copy_on_change && old=`LC_ALL=C ls -dlL "$dst" 2>/dev/null` && new=`LC_ALL=C ls -dlL "$dsttmp" 2>/dev/null` && eval "$initialize_posix_glob" && $posix_glob set -f && set X $old && old=:$2:$4:$5:$6 && set X $new && new=:$2:$4:$5:$6 && $posix_glob set +f && test "$old" = "$new" && $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1 then rm -f "$dsttmp" else # Rename the file to the real destination. $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null || # The rename failed, perhaps because mv can't rename something else # to itself, or perhaps because mv is so ancient that it does not # support -f. { # Now remove or move aside any old file at destination location. # We try this two ways since rm can't unlink itself on some # systems and the destination file might be busy for other # reasons. In this case, the final cleanup might fail but the new # file should still install successfully. { test ! -f "$dst" || $doit $rmcmd -f "$dst" 2>/dev/null || { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null && { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; } } || { echo "$0: cannot unlink or rename $dst" >&2 (exit 1); exit 1 } } && # Now rename the file to the real destination. $doit $mvcmd "$dsttmp" "$dst" } fi || exit 1 trap '' 0 fi done # Local variables: # eval: (add-hook 'write-file-hooks 'time-stamp) # time-stamp-start: "scriptversion=" # time-stamp-format: "%:y-%02m-%02d.%02H" # time-stamp-time-zone: "UTC" # time-stamp-end: "; # UTC" # End: