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authorDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-06-23 02:19:27 +0200
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2019-06-23 02:39:57 +0200
commit73dec828ad61d046d10648ddca5c89ce70352a7a (patch)
treef9c6ac79c1a97736d9c39a282f78dca4ef4ec04d /lib/fstree
parent0b22d6ad0ebed2af239259dbfa36cd9920c6f4a2 (diff)
Move fstree default option processing to fstree code
Instead of decomposing a default string in gensquashfs option processing, move that to fstree_init instead and pass the option string directly to fstree_init. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'lib/fstree')
-rw-r--r--lib/fstree/fstree.c94
1 files changed, 84 insertions, 10 deletions
diff --git a/lib/fstree/fstree.c b/lib/fstree/fstree.c
index a976dda..29dd66b 100644
--- a/lib/fstree/fstree.c
+++ b/lib/fstree/fstree.c
@@ -5,6 +5,85 @@
#include <stdlib.h>
#include <stdio.h>
+enum {
+ DEF_UID = 0,
+ DEF_GID,
+ DEF_MODE,
+ DEF_MTIME,
+};
+
+static const char *defaults[] = {
+ [DEF_UID] = "uid",
+ [DEF_GID] = "gid",
+ [DEF_MODE] = "mode",
+ [DEF_MTIME] = "mtime",
+ NULL
+};
+
+static int process_defaults(struct stat *sb, char *subopts)
+{
+ char *value;
+ long lval;
+ int i;
+
+ while (*subopts != '\0') {
+ i = getsubopt(&subopts, (char *const *)defaults, &value);
+
+ if (value == NULL) {
+ fprintf(stderr, "Missing value for option %s\n",
+ defaults[i]);
+ return -1;
+ }
+
+ switch (i) {
+ case DEF_UID:
+ lval = strtol(value, NULL, 0);
+ if (lval < 0)
+ goto fail_uv;
+ if (lval > 0xFFFFFFFFL)
+ goto fail_ov;
+ sb->st_uid = lval;
+ break;
+ case DEF_GID:
+ lval = strtol(value, NULL, 0);
+ if (lval < 0)
+ goto fail_uv;
+ if (lval > 0xFFFFFFFFL)
+ goto fail_ov;
+ sb->st_gid = lval;
+ break;
+ case DEF_MODE:
+ lval = strtol(value, NULL, 0);
+ if (lval < 0)
+ goto fail_uv;
+ if (lval > 07777)
+ goto fail_ov;
+ sb->st_mode = S_IFDIR | (uint16_t)lval;
+ break;
+ case DEF_MTIME:
+ lval = strtol(value, NULL, 0);
+ if (lval < 0)
+ goto fail_uv;
+ if (lval > 0xFFFFFFFFL)
+ goto fail_ov;
+ sb->st_mtime = lval;
+ sb->st_atime = lval;
+ sb->st_ctime = lval;
+ break;
+ default:
+ fprintf(stderr, "Unknown option '%s'\n", value);
+ return -1;
+ }
+ }
+ return 0;
+fail_uv:
+ fprintf(stderr, "%s: value must be positive\n", defaults[i]);
+ return -1;
+fail_ov:
+ fprintf(stderr, "%s: value too large\n", defaults[i]);
+ return -1;
+}
+
static void free_recursive(tree_node_t *n)
{
tree_node_t *it;
@@ -21,21 +100,16 @@ static void free_recursive(tree_node_t *n)
free(n);
}
-int fstree_init(fstree_t *fs, size_t block_size, uint32_t mtime,
- uint16_t default_mode, uint32_t default_uid,
- uint32_t default_gid)
+int fstree_init(fstree_t *fs, size_t block_size, char *defaults)
{
memset(fs, 0, sizeof(*fs));
-
- fs->defaults.st_uid = default_uid;
- fs->defaults.st_gid = default_gid;
- fs->defaults.st_mode = S_IFDIR | (default_mode & 07777);
- fs->defaults.st_mtime = mtime;
- fs->defaults.st_ctime = mtime;
- fs->defaults.st_atime = mtime;
+ fs->defaults.st_mode = S_IFDIR | 0755;
fs->defaults.st_blksize = block_size;
fs->block_size = block_size;
+ if (defaults != NULL && process_defaults(&fs->defaults, defaults) != 0)
+ return -1;
+
if (str_table_init(&fs->xattr_keys, FSTREE_XATTR_KEY_BUCKETS))
return -1;