e2fsprogs: stop using statics in chattr. Minor code shrinkage (-130 bytes)
This commit is contained in:
Denis Vlasenko
parent
be1a9d4237
commit
8acf521432
@ -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 = ⁡
|
||||
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;
|
||||
}
|
||||
|
||||
@ -12,11 +12,11 @@
|
||||
#define HAVE_EXT2_IOCTLS 1
|
||||
|
||||
#if INT_MAX == LONG_MAX
|
||||
#define IF_LONG_IS_SAME(x) x
|
||||
#define IF_LONG_IS_WIDER(x)
|
||||
#define IF_LONG_IS_SAME(...) __VA_ARGS__
|
||||
#define IF_LONG_IS_WIDER(...)
|
||||
#else
|
||||
#define IF_LONG_IS_SAME(x)
|
||||
#define IF_LONG_IS_WIDER(x) x
|
||||
#define IF_LONG_IS_SAME(...)
|
||||
#define IF_LONG_IS_WIDER(...) __VA_ARGS__
|
||||
#endif
|
||||
|
||||
static void close_silently(int fd)
|
||||
@ -147,6 +147,8 @@ struct flags_name {
|
||||
const char *long_name;
|
||||
};
|
||||
|
||||
/* TODO: apart from I and (disabled) COMPRESSION flags, this
|
||||
* is a duplicate of a table from chattr. Merge? */
|
||||
static const struct flags_name flags_array[] = {
|
||||
{ EXT2_SECRM_FL, 's', "Secure_Deletion" },
|
||||
{ EXT2_UNRM_FL, 'u' , "Undelete" },
|
||||
|
||||
@ -34,11 +34,11 @@ static void list_attributes(const char *name)
|
||||
unsigned long fsflags;
|
||||
unsigned long generation;
|
||||
|
||||
if (fgetflags(name, &fsflags) == -1)
|
||||
if (fgetflags(name, &fsflags) != 0)
|
||||
goto read_err;
|
||||
|
||||
if (option_mask32 & OPT_GENERATION) {
|
||||
if (fgetversion(name, &generation) == -1)
|
||||
if (fgetversion(name, &generation) != 0)
|
||||
goto read_err;
|
||||
printf("%5lu ", generation);
|
||||
}
|
||||
@ -65,14 +65,12 @@ static int lsattr_dir_proc(const char *dir_name, struct dirent *de,
|
||||
|
||||
path = concat_path_file(dir_name, de->d_name);
|
||||
|
||||
if (lstat(path, &st) == -1)
|
||||
if (lstat(path, &st) != 0)
|
||||
bb_perror_msg("stat %s", path);
|
||||
|
||||
else if (de->d_name[0] != '.' || (option_mask32 & OPT_ALL)) {
|
||||
list_attributes(path);
|
||||
if (S_ISDIR(st.st_mode) && (option_mask32 & OPT_RECUR)
|
||||
&& (de->d_name[0] != '.'
|
||||
|| (de->d_name[1] != '\0' && NOT_LONE_CHAR(de->d_name+1, '.')))
|
||||
&& !DOT_OR_DOTDOT(de->d_name)
|
||||
) {
|
||||
printf("\n%s:\n", path);
|
||||
iterate_on_dir(path, lsattr_dir_proc, NULL);
|
||||
@ -81,7 +79,6 @@ static int lsattr_dir_proc(const char *dir_name, struct dirent *de,
|
||||
}
|
||||
|
||||
free(path);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user