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/*
* chattr.c - Change file attributes on an ext2 file system
*
* Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
* Laboratoire MASI, Institut Blaise Pascal
* Universite Pierre et Marie Curie (Paris VI)
*
* This file can be redistributed under the terms of the GNU General
* Public License
*/
/*
* History:
* 93/10/30 - Creation
* 93/11/13 - Replace stat() calls by lstat() to avoid loops
* 94/02/27 - Integrated in Ted's distribution
*/
#include <sys/types.h>
#include <dirent.h>
#include <fcntl.h>
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#include <sys/param.h>
#include <sys/stat.h>
#include <linux/ext2_fs.h>
#include "et/com_err.h"
#include "e2p/e2p.h"
#include "../version.h"
const char * program_name = "chattr";
int add = 0;
int rem = 0;
int set = 0;
int set_version = 0;
unsigned long version;
int recursive = 0;
int verbose = 0;
unsigned long af;
unsigned long rf;
unsigned long sf;
static void volatile fatal_error (const char * fmt_string, int errcode)
{
fprintf (stderr, fmt_string, program_name);
exit (errcode);
}
#define usage() fatal_error ("usage: %s [-RV] [-+=AacdisSu] [-v version] files...\n", \
1)
static int decode_arg (int * i, int argc, char ** argv)
{
char * p;
char * tmp;
switch (argv[*i][0])
{
case '-':
for (p = &argv[*i][1]; *p; p++)
switch (*p)
{
case 'R':
recursive = 1;
break;
case 'S':
rf |= EXT2_SYNC_FL;
rem = 1;
break;
case 'V':
verbose = 1;
break;
#ifdef EXT2_APPEND_FL
case 'a':
rf |= EXT2_APPEND_FL;
rem = 1;
break;
#endif
#ifdef EXT2_NOATIME_FL
case 'A':
rf |= EXT2_NOATIME_FL;
rem = 1;
break;
#endif
case 'c':
rf |= EXT2_COMPR_FL;
rem = 1;
break;
#ifdef EXT2_NODUMP_FL
case 'd':
rf |= EXT2_NODUMP_FL;
rem = 1;
break;
#endif
#ifdef EXT2_IMMUTABLE_FL
case 'i':
rf |= EXT2_IMMUTABLE_FL;
rem = 1;
break;
#endif
case 's':
rf |= EXT2_SECRM_FL;
rem = 1;
break;
case 'u':
rf |= EXT2_UNRM_FL;
rem = 1;
break;
case 'v':
(*i)++;
if (*i >= argc)
usage ();
version = strtol (argv[*i], &tmp, 0);
if (*tmp)
{
com_err (program_name, 0,
"bad version - %s\n", argv[*i]);
usage ();
}
set_version = 1;
break;
default:
fprintf (stderr, "%s: Unrecognized argument: %c\n",
program_name, *p);
usage ();
}
break;
case '+':
add = 1;
for (p = &argv[*i][1]; *p; p++)
switch (*p)
{
case 'S':
af |= EXT2_SYNC_FL;
break;
#ifdef EXT2_APPEND_FL
case 'a':
af |= EXT2_APPEND_FL;
break;
#endif
#ifdef EXT2_NOATIME_FL
case 'A':
af |= EXT2_NOATIME_FL;
break;
#endif
case 'c':
af |= EXT2_COMPR_FL;
break;
#ifdef EXT2_NODUMP_FL
case 'd':
af |= EXT2_NODUMP_FL;
break;
#endif
#ifdef EXT2_IMMUTABLE_FL
case 'i':
af |= EXT2_IMMUTABLE_FL;
break;
#endif
case 's':
af |= EXT2_SECRM_FL;
break;
case 'u':
af |= EXT2_UNRM_FL;
break;
default:
usage ();
}
break;
case '=':
set = 1;
for (p = &argv[*i][1]; *p; p++)
switch (*p)
{
case 'S':
sf |= EXT2_SYNC_FL;
break;
#ifdef EXT2_APPEND_FL
case 'a':
sf |= EXT2_APPEND_FL;
break;
#endif
#ifdef EXT2_NOATIME_FL
case 'A':
sf |= EXT2_NOATIME_FL;
break;
#endif
case 'c':
sf |= EXT2_COMPR_FL;
break;
#ifdef EXT2_NODUMP_FL
case 'd':
sf |= EXT2_NODUMP_FL;
break;
#endif
#ifdef EXT2_IMMUTABLE_FL
case 'i':
sf |= EXT2_IMMUTABLE_FL;
break;
#endif
case 's':
sf |= EXT2_SECRM_FL;
break;
case 'u':
sf |= EXT2_UNRM_FL;
break;
default:
usage ();
}
break;
default:
return EOF;
break;
}
return 1;
}
static int chattr_dir_proc (const char *, struct dirent *, void *);
static void change_attributes (const char * name)
{
unsigned long flags;
struct stat st;
if (lstat (name, &st) == -1)
{
com_err (program_name, errno, "while stating %s", name);
return;
}
if (set)
{
if (verbose)
{
printf ("Flags of %s set as ", name);
print_flags (stdout, sf, 0);
printf ("\n");
}
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 (rem)
flags &= ~rf;
if (add)
flags |= af;
if (verbose)
{
printf ("Flags of %s set as ", name);
print_flags (stdout, flags, 0);
printf ("\n");
}
if (fsetflags (name, flags) == -1)
com_err (program_name, errno,
"while setting flags on %s", name);
}
}
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 (S_ISDIR(st.st_mode) && recursive)
iterate_on_dir (name, chattr_dir_proc, (void *) NULL);
}
static int chattr_dir_proc (const char * dir_name, struct dirent * de, void * private)
{
if (strcmp (de->d_name, ".") && strcmp (de->d_name, ".."))
{
char *path;
path = malloc(strlen (dir_name) + 1 + strlen (de->d_name) + 1);
if (!path)
fatal_error("Couldn't allocate path variable "
"in chattr_dir_proc", 1);
sprintf (path, "%s/%s", dir_name, de->d_name);
change_attributes (path);
free(path);
}
return 0;
}
int main (int argc, char ** argv)
{
int i, j;
int end_arg = 0;
fprintf (stderr, "chattr %s, %s for EXT2 FS %s, %s\n",
E2FSPROGS_VERSION, E2FSPROGS_DATE,
EXT2FS_VERSION, EXT2FS_DATE);
if (argc && *argv)
program_name = *argv;
i = 1;
while (i < argc && !end_arg)
{
if (decode_arg (&i, argc, argv) == EOF)
end_arg = 1;
else
i++;
}
if (i >= argc)
usage ();
if (set && (add || rem))
{
fprintf (stderr, "= is incompatible with - and +\n");
exit (1);
}
if (!(add || rem || set || set_version))
{
fprintf (stderr, "Must use '-v', =, - or +\n");
exit (1);
}
for (j = i; j < argc; j++)
change_attributes (argv[j]);
exit(0);
}
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