X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/b2e8a9b2931c36f11dc743b0503945d08680bb10..0f78b81511be65d8fe21af1e6ac674f9e80ac29d:/rsync.c diff --git a/rsync.c b/rsync.c index ca21e5e4..47268f4d 100644 --- a/rsync.c +++ b/rsync.c @@ -1,30 +1,40 @@ /* - 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 +#endif +#if defined HAVE_LIBCHARSET_H && defined HAVE_LOCALE_CHARSET +#include +#elif defined HAVE_LANGINFO_H && defined HAVE_NL_LANGINFO +#include +#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; @@ -32,13 +42,53 @@ 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 inplace; extern int keep_dirlinks; extern int make_backups; +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 @@ -49,9 +99,31 @@ void free_sums(struct sum_struct *s) free(s); } +/* 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) +{ + /* 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; + } + } 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 flags) +int set_file_attrs(char *fname, struct file_struct *file, STRUCT_STAT *st, + int flags) { int updated = 0; STRUCT_STAT st2; @@ -66,19 +138,26 @@ int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st, 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) - || (S_ISDIR(st->st_mode) && omit_dir_times)) - flags |= PERMS_SKIP_MTIME; - if (!(flags & PERMS_SKIP_MTIME) - && cmp_modtime(st->st_mtime, file->modtime) != 0) { - if (set_modtime(fname,file->modtime) != 0) { + 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; } - updated = 1; + if (ret == 0) /* ret == 1 if symlink could not be set */ + updated = 1; } change_uid = am_root && preserve_uid && st->st_uid != file->uid; @@ -94,13 +173,13 @@ int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st, if (change_uid) { rprintf(FINFO, "set uid of %s from %ld to %ld\n", - safe_fname(fname), + fname, (long)st->st_uid, (long)file->uid); } if (change_gid) { rprintf(FINFO, "set gid of %s from %ld to %ld\n", - safe_fname(fname), + fname, (long)st->st_gid, (long)file->gid); } } @@ -125,31 +204,31 @@ int set_perms(char *fname,struct file_struct *file,STRUCT_STAT *st, } #ifdef HAVE_CHMOD - if (!S_ISLNK(st->st_mode)) { - if ((st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS)) { - updated = 1; - if (do_chmod(fname,(file->mode & CHMOD_BITS)) != 0) { - rsyserr(FERROR, errno, "failed to set permissions on %s", - full_fname(fname)); - return 0; - } + 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 && flags & PERMS_REPORT) { + if (verbose > 1 && flags & ATTRS_REPORT) { enum logcode code = daemon_log_format_has_i || dry_run ? FCLIENT : FINFO; if (updated) - rprintf(code, "%s\n", safe_fname(fname)); + rprintf(code, "%s\n", fname); else - rprintf(code, "%s is uptodate\n", safe_fname(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 @@ -163,36 +242,39 @@ void sig_int(void) 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, - int ok_to_set_time, int overwriting_basis) +/* 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) { int ret; if (inplace) { if (verbose > 2) - rprintf(FINFO, "finishing %s\n", safe_fname(fname)); - goto do_set_perms; + 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_perms(fnametmp, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME); + set_file_attrs(fnametmp, file, NULL, + ok_to_set_time ? 0 : ATTRS_SKIP_MTIME); /* move tmp file over real file */ - if (verbose > 2) { - rprintf(FINFO, "renaming %s to %s\n", - safe_fname(fnametmp), safe_fname(fname)); - } - ret = robust_rename(fnametmp, fname, file->mode & INITACCESSPERMS); + 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), safe_fname(fname)); + ret == -2 ? "copy" : "rename", + full_fname(fnametmp), fname); do_unlink(fnametmp); return; } @@ -200,8 +282,21 @@ void finish_transfer(char *fname, char *fnametmp, struct file_struct *file, /* The file was moved into place (not copied), so it's done. */ return; } - do_set_perms: - set_perms(fname, file, NULL, ok_to_set_time ? 0 : PERMS_SKIP_MTIME); + /* 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)