-/*
- Copyright (C) Andrew Tridgell 1996
- Copyright (C) Paul Mackerras 1996
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-/* this file contains code used by more than one part of the rsync
- process */
+/*
+ * Routines common to more than one of the rsync processes.
+ *
+ * Copyright (C) 1996 Andrew Tridgell
+ * Copyright (C) 1996 Paul Mackerras
+ * Copyright (C) 2003, 2004, 2005, 2006 Wayne Davison
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
#include "rsync.h"
+#if defined HAVE_ICONV_OPEN && defined HAVE_ICONV_H
+#include <iconv.h>
+#endif
+#if defined HAVE_LIBCHARSET_H && defined HAVE_LOCALE_CHARSET
+#include <libcharset.h>
+#elif defined HAVE_LANGINFO_H && defined HAVE_NL_LANGINFO
+#include <langinfo.h>
+#endif
extern int verbose;
extern int dry_run;
+extern int daemon_log_format_has_i;
+extern int preserve_perms;
+extern int preserve_executability;
extern int preserve_times;
+extern int omit_dir_times;
extern int am_root;
+extern int am_server;
+extern int am_sender;
+extern int am_generator;
+extern int am_starting_up;
+extern int allow_8bit_chars;
extern int preserve_uid;
extern int preserve_gid;
-extern int preserve_perms;
+extern int inplace;
+extern int keep_dirlinks;
extern int make_backups;
-extern char *backup_suffix;
+extern mode_t orig_umask;
+extern struct stats stats;
+extern struct chmod_mode_struct *daemon_chmod_modes;
+#if defined HAVE_ICONV_OPEN && defined HAVE_ICONV_H
+iconv_t ic_chck = (iconv_t)-1;
+
+static const char *default_charset(void)
+{
+#if defined HAVE_LIBCHARSET_H && defined HAVE_LOCALE_CHARSET
+ return locale_charset();
+#elif defined HAVE_LANGINFO_H && defined HAVE_NL_LANGINFO
+ return nl_langinfo(CODESET);
+#else
+ return ""; /* Works with (at the very least) gnu iconv... */
+#endif
+}
+
+void setup_iconv()
+{
+ if (!am_server && !allow_8bit_chars) {
+ const char *defset = default_charset();
+
+ /* It's OK if this fails... */
+ ic_chck = iconv_open(defset, defset);
+
+ if (verbose > 3) {
+ if (ic_chck == (iconv_t)-1) {
+ rprintf(FINFO,
+ "note: iconv_open(\"%s\", \"%s\") failed (%d)"
+ " -- using isprint() instead of iconv().\n",
+ defset, defset, errno);
+ } else {
+ rprintf(FINFO,
+ "note: iconv_open(\"%s\", \"%s\") succeeded.\n",
+ defset, defset);
+ }
+ }
+ }
+}
+#endif
/*
free a sums struct
free(s);
}
-
-/*
- * delete a file or directory. If force_delet is set then delete
- * recursively
- */
-int delete_file(char *fname)
+/* This is only called when we aren't preserving permissions. Figure out what
+ * the permissions should be and return them merged back into the mode. */
+mode_t dest_mode(mode_t flist_mode, mode_t cur_mode, int exists)
{
- DIR *d;
- struct dirent *di;
- char buf[MAXPATHLEN];
- extern int force_delete;
- STRUCT_STAT st;
- int ret;
- extern int recurse;
-
- if (do_unlink(fname) == 0 || errno == ENOENT) return 0;
-
-#if SUPPORT_LINKS
- ret = do_lstat(fname, &st);
-#else
- ret = do_stat(fname, &st);
-#endif
- if (ret) {
- rprintf(FERROR,"stat(%s) : %s\n", fname, strerror(errno));
- return -1;
- }
-
- if (!S_ISDIR(st.st_mode)) {
- rprintf(FERROR,"unlink(%s) : %s\n", fname, strerror(errno));
- return -1;
- }
-
- if (do_rmdir(fname) == 0 || errno == ENOENT) return 0;
- if (!force_delete || !recurse ||
- (errno != ENOTEMPTY && errno != EEXIST)) {
- rprintf(FERROR,"rmdir(%s) : %s\n", fname, strerror(errno));
- return -1;
- }
-
- /* now we do a recsursive delete on the directory ... */
- d = opendir(fname);
- if (!d) {
- rprintf(FERROR,"opendir(%s): %s\n",
- fname,strerror(errno));
- return -1;
- }
-
- for (di=readdir(d); di; di=readdir(d)) {
- char *dname = d_name(di);
- if (strcmp(dname,".")==0 ||
- strcmp(dname,"..")==0)
- continue;
- slprintf(buf, sizeof(buf)-1, "%s/%s", fname, dname);
- if (verbose > 0)
- rprintf(FINFO,"deleting %s\n", buf);
- if (delete_file(buf) != 0) {
- closedir(d);
- return -1;
+ /* If the file already exists, we'll return the local permissions,
+ * possibly tweaked by the --executability option. */
+ if (exists) {
+ if (preserve_executability && S_ISREG(flist_mode)) {
+ /* If the source file is executable, grant execute
+ * rights to everyone who can read, but ONLY if the
+ * file isn't already executable. */
+ if (!(flist_mode & 0111))
+ cur_mode &= ~0111;
+ else if (!(cur_mode & 0111))
+ cur_mode |= (cur_mode & 0444) >> 2;
}
- }
-
- closedir(d);
-
- if (do_rmdir(fname) != 0) {
- rprintf(FERROR,"rmdir(%s) : %s\n", fname, strerror(errno));
- return -1;
- }
-
- return 0;
+ } else
+ cur_mode = flist_mode & ACCESSPERMS & ~orig_umask;
+ if (daemon_chmod_modes && !S_ISLNK(flist_mode))
+ cur_mode = tweak_mode(cur_mode, daemon_chmod_modes);
+ return (flist_mode & ~CHMOD_BITS) | (cur_mode & CHMOD_BITS);
}
-
-int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
- int report)
+int set_file_attrs(char *fname, struct file_struct *file, STRUCT_STAT *st,
+ int flags)
{
int updated = 0;
STRUCT_STAT st2;
- extern int am_daemon;
-
- if (dry_run) return 0;
+ int change_uid, change_gid;
if (!st) {
- if (link_stat(fname,&st2) != 0) {
- rprintf(FERROR,"stat %s : %s\n",fname,strerror(errno));
+ if (dry_run)
+ return 1;
+ if (link_stat(fname, &st2, 0) < 0) {
+ rsyserr(FERROR, errno, "stat %s failed",
+ full_fname(fname));
return 0;
}
st = &st2;
+ if (!preserve_perms && S_ISDIR(file->mode)
+ && st->st_mode & S_ISGID) {
+ /* We just created this directory and its setgid
+ * bit is on, so make sure it stays on. */
+ file->mode |= S_ISGID;
+ }
}
- if (preserve_times && !S_ISLNK(st->st_mode) &&
- st->st_mtime != file->modtime) {
- /* don't complain about not setting times on directories
- because some filesystems can't do it */
- if (set_modtime(fname,file->modtime) != 0 &&
- !S_ISDIR(st->st_mode)) {
- rprintf(FERROR,"failed to set times on %s : %s\n",
- fname,strerror(errno));
+ if (!preserve_times || (S_ISDIR(st->st_mode) && omit_dir_times))
+ flags |= ATTRS_SKIP_MTIME;
+ if (!(flags & ATTRS_SKIP_MTIME)
+ && cmp_time(st->st_mtime, file->modtime) != 0) {
+ int ret = set_modtime(fname, file->modtime, st->st_mode);
+ if (ret < 0) {
+ rsyserr(FERROR, errno, "failed to set times on %s",
+ full_fname(fname));
return 0;
- } else {
- updated = 1;
}
+ if (ret == 0) /* ret == 1 if symlink could not be set */
+ updated = 1;
}
- if ((am_root || !am_daemon) &&
- ((am_root && preserve_uid && st->st_uid != file->uid) ||
- (preserve_gid && st->st_gid != file->gid))) {
- if (do_lchown(fname,
- (am_root&&preserve_uid)?file->uid:-1,
- preserve_gid?file->gid:-1) != 0) {
- if (preserve_uid && st->st_uid != file->uid)
- updated = 1;
- if (verbose>1 || preserve_uid) {
- rprintf(FERROR,"chown %s : %s\n",
- fname,strerror(errno));
- return 0;
+ change_uid = am_root && preserve_uid && st->st_uid != file->uid;
+ change_gid = preserve_gid && file->gid != GID_NONE
+ && st->st_gid != file->gid;
+#if !defined HAVE_LCHOWN && !defined CHOWN_MODIFIES_SYMLINK
+ if (S_ISLNK(st->st_mode))
+ ;
+ else
+#endif
+ if (change_uid || change_gid) {
+ if (verbose > 2) {
+ if (change_uid) {
+ rprintf(FINFO,
+ "set uid of %s from %ld to %ld\n",
+ fname,
+ (long)st->st_uid, (long)file->uid);
}
- } else {
- updated = 1;
+ if (change_gid) {
+ rprintf(FINFO,
+ "set gid of %s from %ld to %ld\n",
+ fname,
+ (long)st->st_gid, (long)file->gid);
+ }
+ }
+ if (do_lchown(fname,
+ change_uid ? file->uid : st->st_uid,
+ change_gid ? file->gid : st->st_gid) != 0) {
+ /* shouldn't have attempted to change uid or gid
+ * unless have the privilege */
+ rsyserr(FERROR, errno, "%s %s failed",
+ change_uid ? "chown" : "chgrp",
+ full_fname(fname));
+ return 0;
}
+ /* a lchown had been done - we have to re-stat if the
+ * destination had the setuid or setgid bits set due
+ * to the side effect of the chown call */
+ if (st->st_mode & (S_ISUID | S_ISGID)) {
+ link_stat(fname, st,
+ keep_dirlinks && S_ISDIR(st->st_mode));
+ }
+ updated = 1;
}
#ifdef HAVE_CHMOD
- if (preserve_perms && !S_ISLNK(st->st_mode) &&
- (st->st_mode != file->mode ||
- (updated && (file->mode & ~ACCESSPERMS)))) {
- updated = 1;
- if (do_chmod(fname,file->mode) != 0) {
- rprintf(FERROR,"failed to set permissions on %s : %s\n",
- fname,strerror(errno));
+ if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) {
+ int ret = do_chmod(fname, file->mode);
+ if (ret < 0) {
+ rsyserr(FERROR, errno,
+ "failed to set permissions on %s",
+ full_fname(fname));
return 0;
}
+ if (ret == 0) /* ret == 1 if symlink could not be set */
+ updated = 1;
}
#endif
-
- if (verbose > 1 && report) {
+
+ if (verbose > 1 && flags & ATTRS_REPORT) {
+ enum logcode code = daemon_log_format_has_i || dry_run
+ ? FCLIENT : FINFO;
if (updated)
- rprintf(FINFO,"%s\n",fname);
+ rprintf(code, "%s\n", fname);
else
- rprintf(FINFO,"%s is uptodate\n",fname);
+ rprintf(code, "%s is uptodate\n", fname);
}
return updated;
}
-
-void sig_int(void)
+RETSIGTYPE sig_int(UNUSED(int val))
{
+ /* KLUGE: if the user hits Ctrl-C while ssh is prompting
+ * for a password, then our cleanup's sending of a SIGUSR1
+ * signal to all our children may kill ssh before it has a
+ * chance to restore the tty settings (i.e. turn echo back
+ * on). By sleeping for a short time, ssh gets a bigger
+ * chance to do the right thing. If child processes are
+ * not ssh waiting for a password, then this tiny delay
+ * shouldn't hurt anything. */
+ msleep(400);
exit_cleanup(RERR_SIGNAL);
}
-
-/* finish off a file transfer, renaming the file and setting the permissions
- and ownership */
-void finish_transfer(char *fname, char *fnametmp, struct file_struct *file)
+/* Finish off a file transfer: renaming the file and setting the file's
+ * attributes (e.g. permissions, ownership, etc.). If partialptr is not
+ * NULL and the robust_rename() call is forced to copy the temp file, we
+ * stage the file into the partial-dir and then rename it into place. */
+void finish_transfer(char *fname, char *fnametmp, char *partialptr,
+ struct file_struct *file, int ok_to_set_time,
+ int overwriting_basis)
{
- if (make_backups) {
- char fnamebak[MAXPATHLEN];
- if (strlen(fname) + strlen(backup_suffix) > (MAXPATHLEN-1)) {
- rprintf(FERROR,"backup filename too long\n");
- return;
- }
- slprintf(fnamebak,sizeof(fnamebak)-1,"%s%s",fname,backup_suffix);
- if (do_rename(fname,fnamebak) != 0 && errno != ENOENT) {
- rprintf(FERROR,"rename %s %s : %s\n",fname,fnamebak,strerror(errno));
- return;
- }
+ int ret;
+
+ if (inplace) {
+ if (verbose > 2)
+ rprintf(FINFO, "finishing %s\n", fname);
+ fnametmp = fname;
+ goto do_set_file_attrs;
}
+ if (make_backups && overwriting_basis && !make_backup(fname))
+ return;
+
+ /* Change permissions before putting the file into place. */
+ set_file_attrs(fnametmp, file, NULL,
+ ok_to_set_time ? 0 : ATTRS_SKIP_MTIME);
+
/* move tmp file over real file */
- if (do_rename(fnametmp,fname) != 0) {
- if (errno == EXDEV) {
- /* rename failed on cross-filesystem link.
- Copy the file instead. */
- if (copy_file(fnametmp,fname, file->mode & ACCESSPERMS)) {
- rprintf(FERROR,"copy %s -> %s : %s\n",
- fnametmp,fname,strerror(errno));
- } else {
- set_perms(fname,file,NULL,0);
- }
- do_unlink(fnametmp);
- } else {
- rprintf(FERROR,"rename %s -> %s : %s\n",
- fnametmp,fname,strerror(errno));
- do_unlink(fnametmp);
- }
- } else {
- set_perms(fname,file,NULL,0);
+ if (verbose > 2)
+ rprintf(FINFO, "renaming %s to %s\n", fnametmp, fname);
+ ret = robust_rename(fnametmp, fname, partialptr,
+ file->mode & INITACCESSPERMS);
+ if (ret < 0) {
+ rsyserr(FERROR, errno, "%s %s -> \"%s\"",
+ ret == -2 ? "copy" : "rename",
+ full_fname(fnametmp), fname);
+ do_unlink(fnametmp);
+ return;
}
-}
+ if (ret == 0) {
+ /* The file was moved into place (not copied), so it's done. */
+ return;
+ }
+ /* The file was copied, so tweak the perms of the copied file. If it
+ * was copied to partialptr, move it into its final destination. */
+ fnametmp = partialptr ? partialptr : fname;
+ do_set_file_attrs:
+ set_file_attrs(fnametmp, file, NULL,
+ ok_to_set_time ? 0 : ATTRS_SKIP_MTIME);
+ if (partialptr) {
+ if (do_rename(fnametmp, fname) < 0) {
+ rsyserr(FERROR, errno, "rename %s -> \"%s\"",
+ full_fname(fnametmp), fname);
+ } else
+ handle_partial_dir(partialptr, PDIR_DELETE);
+ }
+}
+const char *who_am_i(void)
+{
+ if (am_starting_up)
+ return am_server ? "server" : "client";
+ return am_sender ? "sender" : am_generator ? "generator" : "receiver";
+}
Matt McCutchen's Web Site / rsync / rsync.git / blobdiff