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authorjutteau2007-05-11 18:10:19 +0000
committerjutteau2007-05-11 18:10:19 +0000
commit5e1a84ab74d5e97582427f016f291a8c11e66f99 (patch)
treeddae3f36a21e7fa7c97145f4a49edcfe50063aa3 /i/pc104/initrd/conf/busybox/e2fsprogs/chattr.c
parentb95709754c870cbb793266ce8e605a81d01a4f75 (diff)
Completion du script de mise à jour de la pc-104 :
* Ajout des sources de busybox dans ./conf/busybox/ * Ajout d'un fichier réclamé par les script dans ./conf/busybox.links
Diffstat (limited to 'i/pc104/initrd/conf/busybox/e2fsprogs/chattr.c')
-rw-r--r--i/pc104/initrd/conf/busybox/e2fsprogs/chattr.c190
1 files changed, 190 insertions, 0 deletions
diff --git a/i/pc104/initrd/conf/busybox/e2fsprogs/chattr.c b/i/pc104/initrd/conf/busybox/e2fsprogs/chattr.c
new file mode 100644
index 0000000..1b7942e
--- /dev/null
+++ b/i/pc104/initrd/conf/busybox/e2fsprogs/chattr.c
@@ -0,0 +1,190 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * 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 "busybox.h"
+#include "e2fs_lib.h"
+
+#define OPT_ADD 1
+#define OPT_REM 2
+#define OPT_SET 4
+#define OPT_SET_VER 8
+static int flags;
+static int recursive;
+
+static unsigned long version;
+
+static unsigned long af;
+static unsigned long rf;
+static unsigned long sf;
+
+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->optchar; fp++)
+ if (fp->optchar == c)
+ return fp->flag;
+ bb_show_usage();
+}
+
+static int decode_arg(const char *arg)
+{
+ unsigned long *fl;
+ char opt = *arg++;
+
+ if (opt == '-') {
+ flags |= OPT_REM;
+ fl = &rf;
+ } else if (opt == '+') {
+ flags |= OPT_ADD;
+ fl = &af;
+ } else if (opt == '=') {
+ flags |= OPT_SET;
+ fl = &sf;
+ } else
+ return 0;
+
+ while (*arg)
+ *fl |= get_flag(*arg++);
+
+ return 1;
+}
+
+static void change_attributes(const char *name);
+
+static int chattr_dir_proc(const char *dir_name, struct dirent *de,
+ void *private ATTRIBUTE_UNUSED)
+{
+ char *path = concat_subpath_file(dir_name, de->d_name);
+ /* path is NULL if de->d_name is "." or "..", else... */
+ if (path) {
+ change_attributes(path);
+ free(path);
+ }
+ return 0;
+}
+
+static void change_attributes(const char *name)
+{
+ unsigned long fsflags;
+ struct stat st;
+
+ if (lstat(name, &st) == -1) {
+ bb_perror_msg("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 (flags & OPT_SET_VER)
+ if (fsetversion(name, version) == -1)
+ bb_perror_msg("setting version on %s", name);
+
+ if (flags & OPT_SET) {
+ fsflags = sf;
+ } else {
+ if (fgetflags(name, &fsflags) == -1) {
+ bb_perror_msg("reading flags on %s", name);
+ goto skip_setflags;
+ }
+ if (flags & OPT_REM)
+ fsflags &= ~rf;
+ if (flags & OPT_ADD)
+ fsflags |= af;
+ if (!S_ISDIR(st.st_mode))
+ fsflags &= ~EXT2_DIRSYNC_FL;
+ }
+ if (fsetflags(name, fsflags) == -1)
+ bb_perror_msg("setting flags on %s", name);
+
+ skip_setflags:
+ if (recursive && S_ISDIR(st.st_mode))
+ iterate_on_dir(name, chattr_dir_proc, NULL);
+}
+
+int chattr_main(int argc, char **argv);
+int chattr_main(int argc, char **argv)
+{
+ char *arg;
+
+ /* parse the args */
+ while ((arg = *++argv)) {
+ /* take care of -R and -v <version> */
+ if (arg[0] == '-') {
+ if (arg[1] == 'R' && arg[2] == '\0') {
+ recursive = 1;
+ continue;
+ }
+ if (arg[1] == 'v' && arg[2] == '\0') {
+ if (!*++argv)
+ bb_show_usage();
+ version = xatoul(*argv);
+ flags |= OPT_SET_VER;
+ continue;
+ }
+ }
+
+ if (!decode_arg(arg))
+ break;
+ }
+
+ /* run sanity checks on all the arguments given us */
+ if (!*argv)
+ bb_show_usage();
+ if ((flags & OPT_SET) && (flags & (OPT_ADD|OPT_REM)))
+ bb_error_msg_and_die("= is incompatible with - and +");
+ if (rf & af)
+ bb_error_msg_and_die("can't set and unset a flag");
+ if (!flags)
+ bb_error_msg_and_die("must use '-v', =, - or +");
+
+ /* now run chattr on all the files passed to us */
+ do change_attributes(*argv); while (*++argv);
+
+ return EXIT_SUCCESS;
+}