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e2fsprogs: stop using statics in chattr. Minor code shrinkage (-130 bytes)

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This commit is contained in:
Denis Vlasenko 2007-04-15 11:48:27 +00:00
parent be1a9d4237
commit 8acf521432
3 changed files with 82 additions and 83 deletions
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138
e2fsprogs/chattr.c
View File

@ -26,59 +26,54 @@
#define OPT_REM 2 #define OPT_REM 2
#define OPT_SET 4 #define OPT_SET 4
#define OPT_SET_VER 8 #define OPT_SET_VER 8
static int flags;
static int recursive;
static unsigned long version; struct globals {
unsigned long version;
static unsigned long af; unsigned long af;
static unsigned long rf; unsigned long rf;
static unsigned long sf; smallint flags;
smallint recursive;
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) static unsigned long get_flag(char c)
{ {
const struct flags_char *fp; /* Two separate vectors take less space than vector of structs */
for (fp = flags_array; fp->optchar; fp++) static const char flags_letter[] = "ASDacdijsutT";
if (fp->optchar == c) static const unsigned long flags_val[] = {
return fp->flag; /* 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(); bb_show_usage();
} }
static int decode_arg(const char *arg) static int decode_arg(const char *arg, struct globals *gp)
{ {
unsigned long *fl; unsigned long *fl;
char opt = *arg++; char opt = *arg++;
fl = &gp->af;
if (opt == '-') { if (opt == '-') {
flags |= OPT_REM; gp->flags |= OPT_REM;
fl = &rf; fl = &gp->rf;
} else if (opt == '+') { } else if (opt == '+') {
flags |= OPT_ADD; gp->flags |= OPT_ADD;
fl = ⁡
} else if (opt == '=') { } else if (opt == '=') {
flags |= OPT_SET; gp->flags |= OPT_SET;
fl = &sf;
} else } else
return 0; return 0;
@ -88,30 +83,29 @@ static int decode_arg(const char *arg)
return 1; 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, static int chattr_dir_proc(const char *dir_name, struct dirent *de, void *gp)
void *private ATTRIBUTE_UNUSED)
{ {
char *path = concat_subpath_file(dir_name, de->d_name); char *path = concat_subpath_file(dir_name, de->d_name);
/* path is NULL if de->d_name is "." or "..", else... */ /* path is NULL if de->d_name is "." or "..", else... */
if (path) { if (path) {
change_attributes(path); change_attributes(path, gp);
free(path); free(path);
} }
return 0; return 0;
} }
static void change_attributes(const char *name) static void change_attributes(const char *name, struct globals *gp)
{ {
unsigned long fsflags; unsigned long fsflags;
struct stat st; struct stat st;
if (lstat(name, &st) == -1) { if (lstat(name, &st) != 0) {
bb_perror_msg("stat %s", name); bb_perror_msg("stat %s", name);
return; return;
} }
if (S_ISLNK(st.st_mode) && recursive) if (S_ISLNK(st.st_mode) && gp->recursive)
return; return;
/* Don't try to open device files, fifos etc. We probably /* 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)) if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode) && !S_ISDIR(st.st_mode))
return; return;
if (flags & OPT_SET_VER) if (gp->flags & OPT_SET_VER)
if (fsetversion(name, version) == -1) if (fsetversion(name, gp->version) != 0)
bb_perror_msg("setting version on %s", name); bb_perror_msg("setting version on %s", name);
if (flags & OPT_SET) { if (gp->flags & OPT_SET) {
fsflags = sf; fsflags = gp->af;
} else { } else {
if (fgetflags(name, &fsflags) == -1) { if (fgetflags(name, &fsflags) != 0) {
bb_perror_msg("reading flags on %s", name); bb_perror_msg("reading flags on %s", name);
goto skip_setflags; goto skip_setflags;
} }
if (flags & OPT_REM) /*if (gp->flags & OPT_REM) - not needed, rf is zero otherwise */
fsflags &= ~rf; fsflags &= ~gp->rf;
if (flags & OPT_ADD) /*if (gp->flags & OPT_ADD) - not needed, af is zero otherwise */
fsflags |= af; fsflags |= gp->af;
/* What is this? And why it's not done for SET case? */
if (!S_ISDIR(st.st_mode)) if (!S_ISDIR(st.st_mode))
fsflags &= ~EXT2_DIRSYNC_FL; fsflags &= ~EXT2_DIRSYNC_FL;
} }
if (fsetflags(name, fsflags) == -1) if (fsetflags(name, fsflags) != 0)
bb_perror_msg("setting flags on %s", name); bb_perror_msg("setting flags on %s", name);
skip_setflags: skip_setflags:
if (recursive && S_ISDIR(st.st_mode)) if (gp->recursive && S_ISDIR(st.st_mode))
iterate_on_dir(name, chattr_dir_proc, NULL); iterate_on_dir(name, chattr_dir_proc, gp);
} }
int chattr_main(int argc, char **argv); int chattr_main(int argc, char **argv);
int chattr_main(int argc, char **argv) int chattr_main(int argc, char **argv)
{ {
struct globals g;
char *arg; char *arg;
memset(&g, 0, sizeof(g));
/* parse the args */ /* parse the args */
while ((arg = *++argv)) { while ((arg = *++argv)) {
/* take care of -R and -v <version> */ /* take care of -R and -v <version> */
if (arg[0] == '-') { if (arg[0] == '-'
if (arg[1] == 'R' && arg[2] == '\0') { && (arg[1] == 'R' || arg[1] == 'v')
recursive = 1; && !arg[2]
) {
if (arg[1] == 'R') {
g.recursive = 1;
continue; continue;
} }
if (arg[1] == 'v' && arg[2] == '\0') { /* arg[1] == 'v' */
if (!*++argv) if (!*++argv)
bb_show_usage(); bb_show_usage();
version = xatoul(*argv); g.version = xatoul(*argv);
flags |= OPT_SET_VER; g.flags |= OPT_SET_VER;
continue; continue;
} }
}
if (!decode_arg(arg)) if (!decode_arg(arg, &g))
break; break;
} }
/* run sanity checks on all the arguments given us */ /* run sanity checks on all the arguments given us */
if (!*argv) if (!*argv)
bb_show_usage(); 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 +"); 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"); 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 +"); bb_error_msg_and_die("must use '-v', =, - or +");
/* now run chattr on all the files passed to us */ /* 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; return EXIT_SUCCESS;
} }

10
e2fsprogs/e2fs_lib.c
View File

@ -12,11 +12,11 @@
#define HAVE_EXT2_IOCTLS 1 #define HAVE_EXT2_IOCTLS 1
#if INT_MAX == LONG_MAX #if INT_MAX == LONG_MAX
#define IF_LONG_IS_SAME(x) x #define IF_LONG_IS_SAME(...) __VA_ARGS__
#define IF_LONG_IS_WIDER(x) #define IF_LONG_IS_WIDER(...)
#else #else
#define IF_LONG_IS_SAME(x) #define IF_LONG_IS_SAME(...)
#define IF_LONG_IS_WIDER(x) x #define IF_LONG_IS_WIDER(...) __VA_ARGS__
#endif #endif
static void close_silently(int fd) static void close_silently(int fd)
@ -147,6 +147,8 @@ struct flags_name {
const char *long_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[] = { static const struct flags_name flags_array[] = {
{ EXT2_SECRM_FL, 's', "Secure_Deletion" }, { EXT2_SECRM_FL, 's', "Secure_Deletion" },
{ EXT2_UNRM_FL, 'u' , "Undelete" }, { EXT2_UNRM_FL, 'u' , "Undelete" },

11
e2fsprogs/lsattr.c
View File

@ -34,11 +34,11 @@ static void list_attributes(const char *name)
unsigned long fsflags; unsigned long fsflags;
unsigned long generation; unsigned long generation;
if (fgetflags(name, &fsflags) == -1) if (fgetflags(name, &fsflags) != 0)
goto read_err; goto read_err;
if (option_mask32 & OPT_GENERATION) { if (option_mask32 & OPT_GENERATION) {
if (fgetversion(name, &generation) == -1) if (fgetversion(name, &generation) != 0)
goto read_err; goto read_err;
printf("%5lu ", generation); 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); 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); bb_perror_msg("stat %s", path);
else if (de->d_name[0] != '.' || (option_mask32 & OPT_ALL)) { else if (de->d_name[0] != '.' || (option_mask32 & OPT_ALL)) {
list_attributes(path); list_attributes(path);
if (S_ISDIR(st.st_mode) && (option_mask32 & OPT_RECUR) if (S_ISDIR(st.st_mode) && (option_mask32 & OPT_RECUR)
&& (de->d_name[0] != '.' && !DOT_OR_DOTDOT(de->d_name)
|| (de->d_name[1] != '\0' && NOT_LONE_CHAR(de->d_name+1, '.')))
) { ) {
printf("\n%s:\n", path); printf("\n%s:\n", path);
iterate_on_dir(path, lsattr_dir_proc, NULL); 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); free(path);
return 0; return 0;
} }