X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/f853b777bead34e8638feaee776b8b12d47dbef5..9439c0cb5a4b020b9bfcfe0351e33c17b9c53b54:/syscall.c

diff --git a/syscall.c b/syscall.c
index 117b10a0..ebcb9009 100644
--- a/syscall.c
+++ b/syscall.c
@@ -1,28 +1,24 @@
-/* 
-   Copyright (C) Andrew Tridgell 1998
-   Copyright (C) 2002 by Martin Pool
-   
-   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.
-*/
-
-/**
- * @file syscall.c
- *
+/*
  * Syscall wrappers to ensure that nothing gets done in dry_run mode
  * and to handle system peculiarities.
- **/
+ *
+ * Copyright (C) 1998 Andrew Tridgell
+ * Copyright (C) 2002 Martin Pool
+ * Copyright (C) 2003-2007 Wayne Davison
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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.,
+ * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
+ */
 
 #include "rsync.h"
 
@@ -31,6 +27,7 @@
 #endif
 
 extern int dry_run;
+extern int am_root;
 extern int read_only;
 extern int list_only;
 extern int preserve_perms;
@@ -45,14 +42,14 @@ extern int preserve_perms;
 
 #define RETURN_ERROR_IF_RO_OR_LO RETURN_ERROR_IF(read_only || list_only, EROFS)
 
-int do_unlink(char *fname)
+int do_unlink(const char *fname)
 {
 	if (dry_run) return 0;
 	RETURN_ERROR_IF_RO_OR_LO;
 	return unlink(fname);
 }
 
-int do_symlink(char *fname1, char *fname2)
+int do_symlink(const char *fname1, const char *fname2)
 {
 	if (dry_run) return 0;
 	RETURN_ERROR_IF_RO_OR_LO;
@@ -60,7 +57,7 @@ int do_symlink(char *fname1, char *fname2)
 }
 
 #ifdef HAVE_LINK
-int do_link(char *fname1, char *fname2)
+int do_link(const char *fname1, const char *fname2)
 {
 	if (dry_run) return 0;
 	RETURN_ERROR_IF_RO_OR_LO;
@@ -78,10 +75,19 @@ int do_lchown(const char *path, uid_t owner, gid_t group)
 	return lchown(path, owner, group);
 }
 
-int do_mknod(char *pathname, mode_t mode, dev_t dev)
+int do_mknod(const char *pathname, mode_t mode, dev_t dev)
 {
 	if (dry_run) return 0;
 	RETURN_ERROR_IF_RO_OR_LO;
+
+	/* For --fake-super, we create a normal file with mode 0600. */
+	if (am_root < 0) {
+		int fd = open(pathname, O_WRONLY|O_CREAT|O_TRUNC, S_IWUSR|S_IRUSR);
+		if (fd < 0 || close(fd) < 0)
+			return -1;
+		return 0;
+	}
+
 #if !defined MKNOD_CREATES_FIFOS && defined HAVE_MKFIFO
 	if (S_ISFIFO(mode))
 		return mkfifo(pathname, mode);
@@ -90,14 +96,15 @@ int do_mknod(char *pathname, mode_t mode, dev_t dev)
 	if (S_ISSOCK(mode)) {
 		int sock;
 		struct sockaddr_un saddr;
-		unsigned int len;
-
-		saddr.sun_family = AF_UNIX;
-		len = strlcpy(saddr.sun_path, pathname, sizeof saddr.sun_path);
+#ifdef HAVE_SOCKADDR_UN_LEN
+		unsigned int len =
+#endif
+		    strlcpy(saddr.sun_path, pathname, sizeof saddr.sun_path);
 #ifdef HAVE_SOCKADDR_UN_LEN
 		saddr.sun_len = len >= sizeof saddr.sun_path
 			      ? sizeof saddr.sun_path : len + 1;
 #endif
+		saddr.sun_family = AF_UNIX;
 
 		if ((sock = socket(PF_UNIX, SOCK_STREAM, 0)) < 0
 		    || (unlink(pathname) < 0 && errno != ENOENT)
@@ -118,14 +125,14 @@ int do_mknod(char *pathname, mode_t mode, dev_t dev)
 #endif
 }
 
-int do_rmdir(char *pathname)
+int do_rmdir(const char *pathname)
 {
 	if (dry_run) return 0;
 	RETURN_ERROR_IF_RO_OR_LO;
 	return rmdir(pathname);
 }
 
-int do_open(char *pathname, int flags, mode_t mode)
+int do_open(const char *pathname, int flags, mode_t mode)
 {
 	if (flags != O_RDONLY) {
 		RETURN_ERROR_IF(dry_run, 0);
@@ -155,24 +162,23 @@ int do_chmod(const char *path, mode_t mode)
 }
 #endif
 
-int do_rename(char *fname1, char *fname2)
+int do_rename(const char *fname1, const char *fname2)
 {
 	if (dry_run) return 0;
 	RETURN_ERROR_IF_RO_OR_LO;
 	return rename(fname1, fname2);
 }
 
-
 void trim_trailing_slashes(char *name)
 {
 	int l;
 	/* Some BSD systems cannot make a directory if the name
 	 * contains a trailing slash.
 	 * <http://www.opensource.apple.com/bugs/X/BSD%20Kernel/2734739.html> */
-	
+
 	/* Don't change empty string; and also we can't improve on
 	 * "/" */
-	
+
 	l = strlen(name);
 	while (l > 1) {
 		if (name[--l] != '/')
@@ -181,16 +187,14 @@ void trim_trailing_slashes(char *name)
 	}
 }
 
-
 int do_mkdir(char *fname, mode_t mode)
 {
 	if (dry_run) return 0;
 	RETURN_ERROR_IF_RO_OR_LO;
-	trim_trailing_slashes(fname);	
+	trim_trailing_slashes(fname);
 	return mkdir(fname, mode);
 }
 
-
 /* like mkstemp but forces permissions */
 int do_mkstemp(char *template, mode_t perms)
 {