diff options
Diffstat (limited to 'util-linux/chattr.c')
| -rw-r--r-- | util-linux/chattr.c | 307 |
1 files changed, 307 insertions, 0 deletions
diff --git a/util-linux/chattr.c b/util-linux/chattr.c new file mode 100644 index 000000000..74209d586 --- /dev/null +++ b/util-linux/chattr.c @@ -0,0 +1,307 @@ +/* + * 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 + * 98/12/29 - Ignore symlinks when working recursively (G M Sipe) + * 98/12/29 - Display version info only when -V specified (G M Sipe) + */ + +#include <sys/types.h> +#include <dirent.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <sys/param.h> +#include <sys/stat.h> +#include "ext2_fs.h" + +#ifdef __GNUC__ +#define EXT2FS_ATTR(x) __attribute__(x) +#else +#define EXT2FS_ATTR(x) +#endif + +#ifndef S_ISLNK /* So we can compile even with gcc-warn */ +# ifdef __S_IFLNK +# define S_ISLNK(mode) __S_ISTYPE((mode), __S_IFLNK) +# else +# define S_ISLNK(mode) 0 +# endif +#endif + +#include "e2fsbb.h" +#include "e2p/e2p.h" + +#define main chattr_main + +static int add; +static int rem; +static int set; +static int set_version; + +static unsigned long version; + +static int recursive; +static int verbose; + +static unsigned long af; +static unsigned long rf; +static unsigned long sf; + +#ifdef _LFS64_LARGEFILE +#define LSTAT lstat64 +#define STRUCT_STAT struct stat64 +#else +#define LSTAT lstat +#define STRUCT_STAT struct stat +#endif + +#if 0 +static void fatal_error(const char * fmt_string, int errcode) +{ + fprintf (stderr, fmt_string, program_name); + exit (errcode); +} + +#define usage() fatal_error(_("usage: %s [-RV] [-+=AacDdijsSu] [-v version] files...\n"), \ + 1) +#endif + +struct flags_char { + unsigned long flag; + char optchar; +}; + +static const struct flags_char flags_array[] = { + { EXT2_NOATIME_FL, 'A' }, + { EXT2_SYNC_FL, 'S' }, + { EXT2_DIRSYNC_FL, 'D' }, + { EXT2_APPEND_FL, 'a' }, + { EXT2_COMPR_FL, 'c' }, + { EXT2_NODUMP_FL, 'd' }, + { EXT2_IMMUTABLE_FL, 'i' }, + { EXT3_JOURNAL_DATA_FL, 'j' }, + { EXT2_SECRM_FL, 's' }, + { EXT2_UNRM_FL, 'u' }, + { EXT2_NOTAIL_FL, 't' }, + { EXT2_TOPDIR_FL, 'T' }, + { 0, 0 } +}; + +static unsigned long get_flag(char c) +{ + const struct flags_char *fp; + + for (fp = flags_array; fp->flag != 0; fp++) { + if (fp->optchar == c) + return fp->flag; + } + return 0; +} + + +static int decode_arg (int * i, int argc, char ** argv) +{ + char * p; + char * tmp; + unsigned long fl; + + switch (argv[*i][0]) + { + case '-': + for (p = &argv[*i][1]; *p; p++) { + if (*p == 'R') { + recursive = 1; + continue; + } + if (*p == 'V') { + verbose = 1; + continue; + } + if (*p == '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; + continue; + } + if ((fl = get_flag(*p)) == 0) + usage(); + rf |= fl; + rem = 1; + } + break; + case '+': + add = 1; + for (p = &argv[*i][1]; *p; p++) { + if ((fl = get_flag(*p)) == 0) + usage(); + af |= fl; + } + break; + case '=': + set = 1; + for (p = &argv[*i][1]; *p; p++) { + if ((fl = get_flag(*p)) == 0) + usage(); + sf |= fl; + } + 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 trying to stat %s"), + name); + return; + } + 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) { + 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 (!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 (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, NULL); +} + +static int chattr_dir_proc (const char * dir_name, struct dirent * de, + void * private EXT2FS_ATTR((unused))) +{ + 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; + +#ifdef ENABLE_NLS + setlocale(LC_MESSAGES, ""); + setlocale(LC_CTYPE, ""); + bindtextdomain(NLS_CAT_NAME, LOCALEDIR); + textdomain(NLS_CAT_NAME); +#endif +#if 0 + if (argc && *argv) + program_name = *argv; +#endif + i = 1; + while (i < argc && !end_arg) { + /* '--' arg should end option processing */ + if (strcmp(argv[i], "--") == 0) { + i++; + end_arg = 1; + } else if (decode_arg (&i, argc, argv) == EOF) + end_arg = 1; + else + i++; + } + if (i >= argc) + usage (); + if (set && (add || rem)) { + fputs(_("= is incompatible with - and +\n"), stderr); + exit (1); + } + if ((rf & af) != 0) { + fputs("Can't both set and unset same flag.\n", stderr); + exit (1); + } + if (!(add || rem || set || set_version)) { + fputs(_("Must use '-v', =, - or +\n"), stderr); + exit (1); + } +#if 0 + if (verbose) + fprintf (stderr, "chattr %s (%s)\n", + E2FSPROGS_VERSION, E2FSPROGS_DATE); +#endif + for (j = i; j < argc; j++) + change_attributes (argv[j]); + exit(0); +} |