#include <fcntl.h>
#include <unistd.h>
+#include <btrfsutil.h>
+
#include "ctree.h"
#include "commands.h"
#include "utils.h"
const char *name,
const char *value)
{
- int ret = 0;
- int fd = -1;
- u64 flags = 0;
-
- fd = open(object, O_RDONLY);
- if (fd < 0) {
- ret = -errno;
- fprintf(stderr, "ERROR: open %s failed. %s\n",
- object, strerror(-ret));
- goto out;
- }
-
- ret = ioctl(fd, BTRFS_IOC_SUBVOL_GETFLAGS, &flags);
- if (ret < 0) {
- ret = -errno;
- fprintf(stderr, "ERROR: failed to get flags for %s. %s\n",
- object, strerror(-ret));
- goto out;
- }
+ enum btrfs_util_error err;
+ bool read_only;
- if (!value) {
- if (flags & BTRFS_SUBVOL_RDONLY)
- fprintf(stdout, "ro=true\n");
- else
- fprintf(stdout, "ro=false\n");
- ret = 0;
- goto out;
- }
+ if (value) {
+ if (!strcmp(value, "true")) {
+ read_only = true;
+ } else if (!strcmp(value, "false")) {
+ read_only = false;
+ } else {
+ error("invalid value for property: %s", value);
+ return -EINVAL;
+ }
- if (!strcmp(value, "true")) {
- flags |= BTRFS_SUBVOL_RDONLY;
- } else if (!strcmp(value, "false")) {
- flags = flags & ~BTRFS_SUBVOL_RDONLY;
+ err = btrfs_util_set_subvolume_read_only(object, read_only);
+ if (err) {
+ error_btrfs_util(err);
+ return -errno;
+ }
} else {
- ret = -EINVAL;
- fprintf(stderr, "ERROR: invalid value for property.\n");
- goto out;
- }
+ err = btrfs_util_get_subvolume_read_only(object, &read_only);
+ if (err) {
+ error_btrfs_util(err);
+ return -errno;
+ }
- ret = ioctl(fd, BTRFS_IOC_SUBVOL_SETFLAGS, &flags);
- if (ret < 0) {
- ret = -errno;
- fprintf(stderr, "ERROR: failed to set flags for %s. %s\n",
- object, strerror(-ret));
- goto out;
+ printf("ro=%s\n", read_only ? "true" : "false");
}
-out:
- if (fd != -1)
- close(fd);
- return ret;
+ return 0;
}
static int prop_label(enum prop_object_type type,
fd = open_file_or_dir3(object, &dirstream, open_flags);
if (fd == -1) {
ret = -errno;
- fprintf(stderr, "ERROR: open %s failed. %s\n",
- object, strerror(-ret));
+ error("failed to open %s: %s", object, strerror(-ret));
goto out;
}
memcpy(xattr_name + XATTR_BTRFS_PREFIX_LEN, name, strlen(name));
xattr_name[XATTR_BTRFS_PREFIX_LEN + strlen(name)] = '\0';
- if (value)
+ if (value) {
+ if (strcmp(value, "no") == 0 || strcmp(value, "none") == 0)
+ value = "";
sret = fsetxattr(fd, xattr_name, value, strlen(value), 0);
- else
+ } else {
sret = fgetxattr(fd, xattr_name, NULL, 0);
+ }
if (sret < 0) {
ret = -errno;
if (ret != -ENOATTR)
- fprintf(stderr,
- "ERROR: failed to %s compression for %s. %s\n",
- value ? "set" : "get", object, strerror(-ret));
+ error("failed to %s compression for %s: %s",
+ value ? "set" : "get", object, strerror(-ret));
else
ret = 0;
goto out;
sret = fgetxattr(fd, xattr_name, buf, len);
if (sret < 0) {
ret = -errno;
- fprintf(stderr,
- "ERROR: failed to get compression for %s. %s\n",
- object, strerror(-ret));
+ error("failed to get compression for %s: %s",
+ object, strerror(-ret));
goto out;
}
fprintf(stdout, "compression=%.*s\n", (int)len, buf);
return ret;
}
-
const struct prop_handler prop_handlers[] = {
{"ro", "Set/get read-only flag of subvolume.", 0, prop_object_subvol,
prop_read_only},
prop_object_dev | prop_object_root, prop_label},
{"compression", "Set/get compression for a file or directory", 0,
prop_object_inode, prop_compression},
- {0, 0, 0, 0, 0}
+ {NULL, NULL, 0, 0, NULL}
};