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authorGravatar Denis Vlasenko <vda.linux@googlemail.com>2007-04-15 11:48:27 +0000
committerGravatar Denis Vlasenko <vda.linux@googlemail.com>2007-04-15 11:48:27 +0000
commit8acf521432b75923c8ece0b4633a25062e30c255 (patch)
tree419c8b72017d869f736cb5d6e1bf732b78d655cf /e2fsprogs/chattr.c
parentbe1a9d4237662f179e2b8f6c7bffd747f3f8fd73 (diff)
downloadbusybox-8acf521432b75923c8ece0b4633a25062e30c255.tar.gz
busybox-8acf521432b75923c8ece0b4633a25062e30c255.tar.bz2
e2fsprogs: stop using statics in chattr. Minor code shrinkage (-130 bytes)
Diffstat (limited to 'e2fsprogs/chattr.c')
-rw-r--r--e2fsprogs/chattr.c144
1 files changed, 72 insertions, 72 deletions
diff --git a/e2fsprogs/chattr.c b/e2fsprogs/chattr.c
index 1b7942e1f..82dba4adf 100644
--- a/e2fsprogs/chattr.c
+++ b/e2fsprogs/chattr.c
@@ -26,59 +26,54 @@
#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 }
+struct globals {
+ unsigned long version;
+ unsigned long af;
+ unsigned long rf;
+ smallint flags;
+ smallint recursive;
};
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;
+ /* Two separate vectors take less space than vector of structs */
+ static const char flags_letter[] = "ASDacdijsutT";
+ static const unsigned long flags_val[] = {
+ /* A */ EXT2_NOATIME_FL,
+ /* S */ EXT2_SYNC_FL,
+ /* D */ EXT2_DIRSYNC_FL,
+ /* a */ EXT2_APPEND_FL,
+ /* c */ EXT2_COMPR_FL,
+ /* d */ EXT2_NODUMP_FL,
+ /* i */ EXT2_IMMUTABLE_FL,
+ /* j */ EXT3_JOURNAL_DATA_FL,
+ /* s */ EXT2_SECRM_FL,
+ /* u */ EXT2_UNRM_FL,
+ /* t */ EXT2_NOTAIL_FL,
+ /* T */ EXT2_TOPDIR_FL,
+ };
+ const char *fp;
+
+ for (fp = flags_letter; *fp; fp++)
+ if (*fp == c)
+ return flags_val[fp - flags_letter];
bb_show_usage();
}
-static int decode_arg(const char *arg)
+static int decode_arg(const char *arg, struct globals *gp)
{
unsigned long *fl;
char opt = *arg++;
+ fl = &gp->af;
if (opt == '-') {
- flags |= OPT_REM;
- fl = &rf;
+ gp->flags |= OPT_REM;
+ fl = &gp->rf;
} else if (opt == '+') {
- flags |= OPT_ADD;
- fl = &af;
+ gp->flags |= OPT_ADD;
} else if (opt == '=') {
- flags |= OPT_SET;
- fl = &sf;
+ gp->flags |= OPT_SET;
} else
return 0;
@@ -88,30 +83,29 @@ static int decode_arg(const char *arg)
return 1;
}
-static void change_attributes(const char *name);
+static void change_attributes(const char *name, struct globals *gp);
-static int chattr_dir_proc(const char *dir_name, struct dirent *de,
- void *private ATTRIBUTE_UNUSED)
+static int chattr_dir_proc(const char *dir_name, struct dirent *de, void *gp)
{
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);
+ change_attributes(path, gp);
free(path);
}
return 0;
}
-static void change_attributes(const char *name)
+static void change_attributes(const char *name, struct globals *gp)
{
unsigned long fsflags;
struct stat st;
- if (lstat(name, &st) == -1) {
+ if (lstat(name, &st) != 0) {
bb_perror_msg("stat %s", name);
return;
}
- if (S_ISLNK(st.st_mode) && recursive)
+ if (S_ISLNK(st.st_mode) && gp->recursive)
return;
/* Don't try to open device files, fifos etc. We probably
@@ -121,70 +115,76 @@ static void change_attributes(const char *name)
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)
+ if (gp->flags & OPT_SET_VER)
+ if (fsetversion(name, gp->version) != 0)
bb_perror_msg("setting version on %s", name);
- if (flags & OPT_SET) {
- fsflags = sf;
+ if (gp->flags & OPT_SET) {
+ fsflags = gp->af;
} else {
- if (fgetflags(name, &fsflags) == -1) {
+ if (fgetflags(name, &fsflags) != 0) {
bb_perror_msg("reading flags on %s", name);
goto skip_setflags;
}
- if (flags & OPT_REM)
- fsflags &= ~rf;
- if (flags & OPT_ADD)
- fsflags |= af;
+ /*if (gp->flags & OPT_REM) - not needed, rf is zero otherwise */
+ fsflags &= ~gp->rf;
+ /*if (gp->flags & OPT_ADD) - not needed, af is zero otherwise */
+ fsflags |= gp->af;
+ /* What is this? And why it's not done for SET case? */
if (!S_ISDIR(st.st_mode))
fsflags &= ~EXT2_DIRSYNC_FL;
}
- if (fsetflags(name, fsflags) == -1)
+ if (fsetflags(name, fsflags) != 0)
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);
+ if (gp->recursive && S_ISDIR(st.st_mode))
+ iterate_on_dir(name, chattr_dir_proc, gp);
}
int chattr_main(int argc, char **argv);
int chattr_main(int argc, char **argv)
{
+ struct globals g;
char *arg;
+ memset(&g, 0, sizeof(g));
+
/* 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;
+ if (arg[0] == '-'
+ && (arg[1] == 'R' || arg[1] == 'v')
+ && !arg[2]
+ ) {
+ if (arg[1] == 'R') {
+ g.recursive = 1;
continue;
}
+ /* arg[1] == 'v' */
+ if (!*++argv)
+ bb_show_usage();
+ g.version = xatoul(*argv);
+ g.flags |= OPT_SET_VER;
+ continue;
}
- if (!decode_arg(arg))
+ if (!decode_arg(arg, &g))
break;
}
/* run sanity checks on all the arguments given us */
if (!*argv)
bb_show_usage();
- if ((flags & OPT_SET) && (flags & (OPT_ADD|OPT_REM)))
+ if ((g.flags & OPT_SET) && (g.flags & (OPT_ADD|OPT_REM)))
bb_error_msg_and_die("= is incompatible with - and +");
- if (rf & af)
+ if (g.rf & g.af)
bb_error_msg_and_die("can't set and unset a flag");
- if (!flags)
+ if (!g.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);
+ do change_attributes(*argv, &g); while (*++argv);
return EXIT_SUCCESS;
}