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tmpfiles: add RECURSIVE_RELABEL_PATH ('Z')

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Feature requested by Dan Walsh.
This commit is contained in:
Michal Schmidt 2011-12-15 23:11:07 +01:00
parent 99e68c0b2d
commit a8d8878329
1 changed files with 112 additions and 12 deletions
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124
src/tmpfiles.c
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@ -61,7 +61,8 @@ typedef enum ItemType {
/* These ones take globs */
IGNORE_PATH = 'x',
REMOVE_PATH = 'r',
RECURSIVE_REMOVE_PATH = 'R'
RECURSIVE_REMOVE_PATH = 'R',
RECURSIVE_RELABEL_PATH = 'Z'
} ItemType;
typedef struct Item {
@ -91,7 +92,7 @@ static const char *arg_prefix = NULL;
#define MAX_DEPTH 256
static bool needs_glob(ItemType t) {
return t == IGNORE_PATH || t == REMOVE_PATH || t == RECURSIVE_REMOVE_PATH;
return t == IGNORE_PATH || t == REMOVE_PATH || t == RECURSIVE_REMOVE_PATH || t == RECURSIVE_RELABEL_PATH;
}
static struct Item* find_glob(Hashmap *h, const char *match) {
@ -405,6 +406,96 @@ finish:
return r;
}
static int recursive_relabel_children(const char *path) {
DIR *d;
int ret = 0;
/* This returns the first error we run into, but nevertheless
* tries to go on */
d = opendir(path);
if (!d)
return errno == ENOENT ? 0 : -errno;
for (;;) {
struct dirent buf, *de;
bool is_dir;
int r;
char *entry_path;
r = readdir_r(d, &buf, &de);
if (r != 0) {
if (ret == 0)
ret = -r;
break;
}
if (!de)
break;
if (streq(de->d_name, ".") || streq(de->d_name, ".."))
continue;
if (asprintf(&entry_path, "%s/%s", path, de->d_name) < 0) {
if (ret == 0)
ret = -ENOMEM;
continue;
}
if (de->d_type == DT_UNKNOWN) {
struct stat st;
if (lstat(entry_path, &st) < 0) {
if (ret == 0 && errno != ENOENT)
ret = -errno;
free(entry_path);
continue;
}
is_dir = S_ISDIR(st.st_mode);
} else
is_dir = de->d_type == DT_DIR;
r = label_fix(entry_path, false);
if (r < 0) {
if (ret == 0 && r != -ENOENT)
ret = r;
free(entry_path);
continue;
}
if (is_dir) {
r = recursive_relabel_children(entry_path);
if (r < 0 && ret == 0)
ret = r;
}
free(entry_path);
}
closedir(d);
return ret;
}
static int recursive_relabel(Item *i, const char *path) {
int r;
struct stat st;
r = label_fix(path, false);
if (r < 0)
return r;
if (lstat(path, &st) < 0)
return -errno;
if (S_ISDIR(st.st_mode))
r = recursive_relabel_children(path);
return r;
}
static int glob_item(Item *i, int (*action)(Item *, const char *)) {
int r = 0, k;
glob_t g;
@ -553,6 +644,12 @@ static int create_item(Item *i) {
return r;
break;
case RECURSIVE_RELABEL_PATH:
r = glob_item(i, recursive_relabel);
if (r < 0)
return r;
}
log_debug("%s created successfully.", i->path);
@ -572,6 +669,7 @@ static int remove_item_instance(Item *i, const char *instance) {
case CREATE_DIRECTORY:
case CREATE_FIFO:
case IGNORE_PATH:
case RECURSIVE_RELABEL_PATH:
break;
case REMOVE_PATH:
@ -608,6 +706,7 @@ static int remove_item(Item *i) {
case CREATE_DIRECTORY:
case CREATE_FIFO:
case IGNORE_PATH:
case RECURSIVE_RELABEL_PATH:
break;
case REMOVE_PATH:
@ -707,20 +806,21 @@ static int parse_line(const char *fname, unsigned line, const char *buffer) {
r = -EIO;
goto finish;
}
i->type = type;
if (i->type != CREATE_FILE &&
i->type != TRUNCATE_FILE &&
i->type != CREATE_DIRECTORY &&
i->type != TRUNCATE_DIRECTORY &&
i->type != CREATE_FIFO &&
i->type != IGNORE_PATH &&
i->type != REMOVE_PATH &&
i->type != RECURSIVE_REMOVE_PATH) {
log_error("[%s:%u] Unknown file type '%c'.", fname, line, i->type);
if (type != CREATE_FILE &&
type != TRUNCATE_FILE &&
type != CREATE_DIRECTORY &&
type != TRUNCATE_DIRECTORY &&
type != CREATE_FIFO &&
type != IGNORE_PATH &&
type != REMOVE_PATH &&
type != RECURSIVE_REMOVE_PATH &&
type != RECURSIVE_RELABEL_PATH) {
log_error("[%s:%u] Unknown file type '%c'.", fname, line, type);
r = -EBADMSG;
goto finish;
}
i->type = type;
if (!path_is_absolute(i->path)) {
log_error("[%s:%u] Path '%s' not absolute.", fname, line, i->path);