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run_parts: make it sort executables by name (required by API)

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This commit is contained in:
Denis Vlasenko 2007-09-23 18:34:49 +00:00
parent 06b3cc2811
commit 2a1d024333
1 changed files with 114 additions and 86 deletions
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200
debianutils/run_parts.c
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@ -34,6 +34,69 @@
#include "libbb.h"
struct globals {
char **names;
int cur;
char *cmd[1];
};
#define G (*(struct globals*)&bb_common_bufsiz1)
#define names (G.names)
#define cur (G.cur )
#define cmd (G.cmd )
enum { NUM_CMD = (COMMON_BUFSIZE - sizeof(struct globals)) / sizeof(cmd[0]) };
enum {
RUN_PARTS_OPT_a = (1 << 0),
RUN_PARTS_OPT_u = (1 << 1),
RUN_PARTS_OPT_t = (1 << 2),
RUN_PARTS_OPT_l = (1 << 3) * ENABLE_FEATURE_RUN_PARTS_FANCY,
};
#if ENABLE_FEATURE_RUN_PARTS_FANCY
#define list_mode (option_mask32 & RUN_PARTS_OPT_l)
#else
#define list_mode 0
#endif
/* Is this a valid filename (upper/lower alpha, digits,
* underscores, and hyphens only?)
*/
static bool invalid_name(const char *c)
{
c = bb_basename(c);
while (*c && (isalnum(*c) || *c == '_' || *c == '-'))
c++;
return *c; /* TRUE (!0) if terminating NUL is not reached */
}
static int bb_alphasort(const void *p1, const void *p2)
{
return strcmp(*(char **) p1, *(char **) p2);
}
static int act(const char *file, struct stat *statbuf, void *args, int depth)
{
if (depth == 1)
return TRUE;
if (depth == 2
&& ( !(statbuf->st_mode & (S_IFREG | S_IFLNK))
|| invalid_name(file)
|| (!list_mode && access(file, X_OK) != 0))
) {
return SKIP;
}
names = xrealloc(names, (cur + 2) * sizeof(names[0]));
names[cur++] = xstrdup(file);
names[cur] = NULL;
return TRUE;
}
#if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
static const char runparts_longopts[] ALIGN1 =
"arg\0" Required_argument "a"
@ -47,100 +110,65 @@ static const char runparts_longopts[] ALIGN1 =
;
#endif
struct globals {
smalluint mode;
char *cmd[10]; /* merely arbitrary arg count */
};
#define G (*(struct globals*)&bb_common_bufsiz1)
/* valid_name */
/* True or false? Is this a valid filename (upper/lower alpha, digits,
* underscores, and hyphens only?)
*/
static bool invalid_name(const char *c)
{
c = bb_basename(c);
while (*c && (isalnum(*c) || *c == '_' || *c == '-'))
c++;
return *c; /* TRUE (!0) if terminating NUL is not reached */
}
#define RUN_PARTS_OPT_a (1<<0)
#define RUN_PARTS_OPT_u (1<<1)
#define RUN_PARTS_OPT_t (1<<2)
#if ENABLE_FEATURE_RUN_PARTS_FANCY
#define RUN_PARTS_OPT_l (1<<3)
#endif
#define test_mode (G.mode & RUN_PARTS_OPT_t)
#if ENABLE_FEATURE_RUN_PARTS_FANCY
#define list_mode (G.mode & RUN_PARTS_OPT_l)
#else
#define list_mode (0)
#endif
static int act(const char *file, struct stat *statbuf, void *args, int depth)
{
int ret;
if (depth == 1)
return TRUE;
if (depth == 2 &&
((!list_mode && access(file, X_OK)) ||
invalid_name(file) ||
!(statbuf->st_mode & (S_IFREG | S_IFLNK))) )
return SKIP;
if (test_mode || list_mode) {
puts(file);
return TRUE;
}
G.cmd[0] = (char*)file;
ret = wait4pid(spawn(G.cmd));
if (ret < 0) {
bb_perror_msg("failed to exec %s", file);
} else if (ret > 0) {
bb_error_msg("%s exited with return code %d", file, ret);
}
return !ret;
}
int run_parts_main(int argc, char **argv);
int run_parts_main(int argc, char **argv)
{
char *umask_p;
const char *umask_p = "22";
llist_t *arg_list = NULL;
unsigned tmp;
unsigned n;
int ret;
umask(022);
/* We require exactly one argument: the directory name */
opt_complementary = "=1:a::";
#if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
applet_long_options = runparts_longopts;
#endif
tmp = getopt32(argv, "a:u:t"USE_FEATURE_RUN_PARTS_FANCY("l"), &arg_list, &umask_p);
G.mode = tmp &~ (RUN_PARTS_OPT_a|RUN_PARTS_OPT_u);
if (tmp & RUN_PARTS_OPT_u) {
/* Check and set the umask of the program executed.
* As stated in the original run-parts, the octal conversion in
* libc is not foolproof; it will take the 8 and 9 digits under
* some circumstances. We'll just have to live with it.
*/
umask(xstrtoul_range(umask_p, 8, 0, 07777));
/* We require exactly one argument: the directory name */
opt_complementary = "=1:a::";
getopt32(argv, "a:u:t"USE_FEATURE_RUN_PARTS_FANCY("l"), &arg_list, &umask_p);
umask(xstrtou_range(umask_p, 8, 0, 07777));
n = 1;
while (arg_list && n < NUM_CMD) {
cmd[n] = arg_list->data;
arg_list = arg_list->link;
n++;
}
for (tmp = 1; arg_list; arg_list = arg_list->link, tmp++)
G.cmd[tmp] = arg_list->data;
/* G.cmd[tmp] = NULL; - G is already zeroed out */
if (!recursive_action(argv[argc - 1],
/* cmd[n] = NULL; - is already zeroed out */
/* run-parts has to sort executables by name before running them */
recursive_action(argv[optind],
ACTION_RECURSE|ACTION_FOLLOWLINKS,
act, /* file action */
act, /* dir action */
NULL, /* user data */
1 /* depth */
))
return EXIT_FAILURE;
return EXIT_SUCCESS;
act, /* file action */
act, /* dir action */
NULL, /* user data */
1 /* depth */
);
if (!names)
return 0;
qsort(names, cur, sizeof(char *), bb_alphasort);
n = 0;
while (1) {
char *name = *names++;
if (!name)
break;
if (option_mask32 & (RUN_PARTS_OPT_t | RUN_PARTS_OPT_l)) {
puts(name);
continue;
}
cmd[0] = name;
ret = wait4pid(spawn(cmd));
if (ret == 0)
continue;
n = 1;
if (ret < 0)
bb_perror_msg("failed to exec %s", name);
else /* ret > 0 */
bb_error_msg("%s exited with return code %d", name, ret);
}
return n;
}