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Message-Id: <1193059807-7933-3-git-send-email-tytso@mit.edu>
Date: Mon, 22 Oct 2007 09:30:07 -0400
From: Theodore Ts'o <tytso@....edu>
To: linux-ext4@...r.kernel.org
Cc: Eric Sandeen <sandeen@...hat.com>, Theodore Ts'o <tytso@....edu>
Subject: [PATCH] chattr: provide an exit code in case of failure and add -f flag
Fix chattr so that if there are errors, it will report it via a
non-zero exit code. It will now explicitly give errors when
attempting to set files that are not files or directories (which are
currently not supported under Linux). The -f flag will suppress error
messages from being printed, although the exit status will still be
non-zero.
Addresses-Red-Hat-Bugzilla: #180596
Signed-off-by: "Theodore Ts'o" <tytso@....edu>
Signed-off-by: Eric Sandeen <sandeen@...hat.com>
---
misc/chattr.1.in | 7 ++--
misc/chattr.c | 83 +++++++++++++++++++++++++++++++----------------------
2 files changed, 52 insertions(+), 38 deletions(-)
diff --git a/misc/chattr.1.in b/misc/chattr.1.in
index 2b48fb0..2334675 100644
--- a/misc/chattr.1.in
+++ b/misc/chattr.1.in
@@ -5,7 +5,7 @@ chattr \- change file attributes on a Linux second extended file system
.SH SYNOPSIS
.B chattr
[
-.B \-RV
+.B \-RVf
]
[
.B \-v
@@ -34,12 +34,13 @@ synchronous updates (S), and top of directory hierarchy (T).
.TP
.B \-R
Recursively change attributes of directories and their contents.
-Symbolic links encountered during recursive directory traversals are
-ignored.
.TP
.B \-V
Be verbose with chattr's output and print the program version.
.TP
+.B \-f
+Suppress most error messages.
+.TP
.BI \-v " version"
Set the file's version/generation number.
.SH ATTRIBUTES
diff --git a/misc/chattr.c b/misc/chattr.c
index c6d8d9f..efaa559 100644
--- a/misc/chattr.c
+++ b/misc/chattr.c
@@ -65,6 +65,7 @@ static unsigned long version;
static int recursive;
static int verbose;
+static int silent;
static unsigned long af;
static unsigned long rf;
@@ -80,8 +81,8 @@ static unsigned long sf;
static void usage(void)
{
- fprintf(stderr,
- _("Usage: %s [-RV] [-+=AacDdijsSu] [-v version] files...\n"),
+ fprintf(stderr,
+ _("Usage: %s [-RVf] [-+=AacDdijsSu] [-v version] files...\n"),
program_name);
exit(1);
}
@@ -137,6 +138,10 @@ static int decode_arg (int * i, int argc, char ** argv)
verbose = 1;
continue;
}
+ if (*p == 'f') {
+ silent = 1;
+ continue;
+ }
if (*p == 'v') {
(*i)++;
if (*i >= argc)
@@ -144,7 +149,7 @@ static int decode_arg (int * i, int argc, char ** argv)
version = strtol (argv[*i], &tmp, 0);
if (*tmp) {
com_err (program_name, 0,
- _("bad version - %s\n"),
+ _("bad version - %s\n"),
argv[*i]);
usage ();
}
@@ -182,26 +187,17 @@ static int decode_arg (int * i, int argc, char ** argv)
static int chattr_dir_proc (const char *, struct dirent *, void *);
-static void change_attributes (const char * name)
+static int change_attributes (const char * name, int cmdline)
{
unsigned long flags;
STRUCT_STAT st;
if (LSTAT (name, &st) == -1) {
- com_err (program_name, errno, _("while trying to stat %s"),
- name);
- return;
+ if (!silent)
+ com_err (program_name, errno,
+ _("while trying to stat %s"), name);
+ return -1;
}
- if (S_ISLNK(st.st_mode) && recursive)
- return;
-
- /* Don't try to open device files, fifos etc. We probably
- ought to display an error if the file was explicitly given
- on the command line (whether or not recursive was
- requested). */
- if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode) &&
- !S_ISDIR(st.st_mode))
- return;
if (set) {
if (verbose) {
@@ -212,10 +208,12 @@ static void change_attributes (const char * name)
if (fsetflags (name, sf) == -1)
perror (name);
} else {
- if (fgetflags (name, &flags) == -1)
- com_err (program_name, errno,
- _("while reading flags on %s"), name);
- else {
+ if (fgetflags (name, &flags) == -1) {
+ if (!silent)
+ com_err (program_name, errno,
+ _("while reading flags on %s"), name);
+ return -1;
+ } else {
if (rem)
flags &= ~rf;
if (add)
@@ -227,25 +225,36 @@ static void change_attributes (const char * name)
}
if (!S_ISDIR(st.st_mode))
flags &= ~EXT2_DIRSYNC_FL;
- if (fsetflags (name, flags) == -1)
- com_err (program_name, errno,
- _("while setting flags on %s"), name);
+ if (fsetflags (name, flags) == -1) {
+ if (!silent)
+ com_err(program_name, errno,
+ _("while setting flags on %s"),
+ name);
+ return -1;
+ }
}
}
if (set_version) {
if (verbose)
printf (_("Version of %s set as %lu\n"), name, version);
- if (fsetversion (name, version) == -1)
- com_err (program_name, errno,
- _("while setting version on %s"), name);
+ if (fsetversion (name, version) == -1) {
+ if (!silent)
+ com_err (program_name, errno,
+ _("while setting version on %s"),
+ name);
+ return -1;
+ }
}
if (S_ISDIR(st.st_mode) && recursive)
- iterate_on_dir (name, chattr_dir_proc, NULL);
+ return iterate_on_dir (name, chattr_dir_proc, NULL);
+ return 0;
}
static int chattr_dir_proc (const char * dir_name, struct dirent * de,
void * private EXT2FS_ATTR((unused)))
{
+ int ret = 0;
+
if (strcmp (de->d_name, ".") && strcmp (de->d_name, "..")) {
char *path;
@@ -253,19 +262,20 @@ static int chattr_dir_proc (const char * dir_name, struct dirent * de,
if (!path) {
fprintf(stderr, _("Couldn't allocate path variable "
"in chattr_dir_proc"));
- exit(1);
+ return -1;
}
- sprintf (path, "%s/%s", dir_name, de->d_name);
- change_attributes (path);
+ sprintf(path, "%s/%s", dir_name, de->d_name);
+ ret = change_attributes(path, 0);
free(path);
}
- return 0;
+ return ret;
}
int main (int argc, char ** argv)
{
int i, j;
int end_arg = 0;
+ int err, retval = 0;
#ifdef ENABLE_NLS
setlocale(LC_MESSAGES, "");
@@ -303,7 +313,10 @@ int main (int argc, char ** argv)
if (verbose)
fprintf (stderr, "chattr %s (%s)\n",
E2FSPROGS_VERSION, E2FSPROGS_DATE);
- for (j = i; j < argc; j++)
- change_attributes (argv[j]);
- exit(0);
+ for (j = i; j < argc; j++) {
+ err = change_attributes (argv[j], 1);
+ if (err)
+ retval = 1;
+ }
+ exit(retval);
}
--
1.5.3.4.1232.g9991d-dirty
-
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