extern int preserve_gid;
extern int preserve_perms;
extern int make_backups;
-extern char *backup_suffix;
/*
/*
- * delete a file or directory. If force_delet is set then delete
+ * delete a file or directory. If force_delete is set then delete
* recursively
*/
int delete_file(char *fname)
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)) {
+ if (robust_unlink(fname) == 0 || errno == ENOENT) return 0;
rprintf(FERROR,"unlink(%s) : %s\n", fname, strerror(errno));
return -1;
}
return 0;
}
+static int is_in_group(gid_t gid)
+{
+#ifdef GETGROUPS_T
+ static gid_t last_in = (gid_t) -2, last_out;
+ static int ngroups = -2;
+ static GETGROUPS_T *gidset;
+ int n;
+
+ if (gid == last_in)
+ return last_out;
+ if (ngroups < -1) {
+ /* treat failure (-1) as if not member of any group */
+ ngroups = getgroups(0, 0);
+ if (ngroups > 0) {
+ gidset = (GETGROUPS_T *) malloc(ngroups * sizeof(GETGROUPS_T));
+ ngroups = getgroups(ngroups, gidset);
+ }
+ }
+
+ last_in = gid;
+ last_out = 0;
+ for (n = 0; n < ngroups; n++) {
+ if (gidset[n] == gid) {
+ last_out = 1;
+ break;
+ }
+ }
+ return last_out;
+
+#else
+ return 0;
+#endif
+}
int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st,
int report)
{
int updated = 0;
STRUCT_STAT st2;
- extern int am_daemon;
+ int change_uid, change_gid;
if (dry_run) return 0;
}
}
- if ((am_root || !am_daemon) &&
- ((am_root && preserve_uid && st->st_uid != file->uid) ||
- (preserve_gid && st->st_gid != file->gid))) {
+ change_uid = am_root && preserve_uid && st->st_uid != file->uid;
+ change_gid = preserve_gid && file->gid != (gid_t) -1 && \
+ st->st_gid != file->gid;
+ if (change_gid && !am_root) {
+ /* enforce bsd-style group semantics: non-root can only
+ change to groups that the user is a member of */
+ change_gid = is_in_group(file->gid);
+ }
+ if (change_uid || change_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;
- }
- } else {
- updated = 1;
+ 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 */
+ rprintf(FERROR,"chown %s : %s\n", fname,strerror(errno));
+ 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);
}
+ 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));
- return 0;
+ if (!S_ISLNK(st->st_mode)) {
+ if (st->st_mode != file->mode) {
+ updated = 1;
+ if (do_chmod(fname,file->mode) != 0) {
+ rprintf(FERROR,"failed to set permissions on %s : %s\n",
+ fname,strerror(errno));
+ return 0;
+ }
}
}
#endif
and ownership */
void finish_transfer(char *fname, char *fnametmp, struct file_struct *file)
{
- 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),"%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;
- }
- }
+ if (make_backups && !make_backup(fname))
+ return;
/* move tmp file over real file */
- if (do_rename(fnametmp,fname) != 0) {
+ if (robust_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)) {
+ if (copy_file(fnametmp,fname, file->mode & INITACCESSPERMS)) {
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);
}
+ do_unlink(fnametmp);
} else {
set_perms(fname,file,NULL,0);
}
}
-
-
-
git.samba.org / rsync.git / blobdiff