#include "strv.h"
#include "time-util.h"
#include "utf8.h"
+#include "vpick.h"
#include "xattr-util.h"
static const char* const image_search_path[_IMAGE_CLASS_MAX] = {
return 0;
}
-static int extract_pretty(
+static int extract_image_basename(
const char *path,
- const char *class_suffix,
- const char *format_suffix,
- char **ret) {
+ const char *class_suffix, /* e.g. ".sysext" (this is an optional suffix) */
+ char **format_suffixes, /* e.g. ".raw" (one of these will be required) */
+ char **ret_basename,
+ char **ret_suffix) {
- _cleanup_free_ char *name = NULL;
+ _cleanup_free_ char *name = NULL, *suffix = NULL;
int r;
assert(path);
- assert(ret);
r = path_extract_filename(path, &name);
if (r < 0)
return r;
- if (format_suffix) {
- char *e = endswith(name, format_suffix);
+ if (format_suffixes) {
+ char *e = strv_endswith(name, format_suffixes);
if (!e) /* Format suffix is required */
return -EINVAL;
+ if (ret_suffix) {
+ suffix = strdup(e);
+ if (!suffix)
+ return -ENOMEM;
+ }
+
*e = 0;
}
if (class_suffix) {
char *e = endswith(name, class_suffix);
- if (e) /* Class suffix is optional */
+ if (e) { /* Class suffix is optional */
+ if (ret_suffix) {
+ _cleanup_free_ char *j = strjoin(e, suffix);
+ if (!j)
+ return -ENOMEM;
+
+ free_and_replace(suffix, j);
+ }
+
*e = 0;
+ }
}
if (!image_name_is_valid(name))
return -EINVAL;
- *ret = TAKE_PTR(name);
+ if (ret_suffix)
+ *ret_suffix = TAKE_PTR(suffix);
+
+ if (ret_basename)
+ *ret_basename = TAKE_PTR(name);
+
return 0;
}
return 0;
if (!pretty) {
- r = extract_pretty(filename, image_class_suffix_to_string(c), NULL, &pretty_buffer);
+ r = extract_image_basename(
+ filename,
+ image_class_suffix_to_string(c),
+ /* format_suffix= */ NULL,
+ &pretty_buffer,
+ /* ret_suffix= */ NULL);
if (r < 0)
return r;
(void) fd_getcrtime_at(dfd, filename, AT_SYMLINK_FOLLOW, &crtime);
if (!pretty) {
- r = extract_pretty(filename, image_class_suffix_to_string(c), ".raw", &pretty_buffer);
+ r = extract_image_basename(
+ filename,
+ image_class_suffix_to_string(c),
+ STRV_MAKE(".raw"),
+ &pretty_buffer,
+ /* ret_suffix= */ NULL);
if (r < 0)
return r;
return 0;
if (!pretty) {
- r = extract_pretty(filename, NULL, NULL, &pretty_buffer);
+ r = extract_image_basename(
+ filename,
+ /* class_suffix= */ NULL,
+ /* format_suffix= */ NULL,
+ &pretty_buffer,
+ /* ret_suffix= */ NULL);
if (r < 0)
return r;
return in_initrd() && image_search_path_initrd[class] ? image_search_path_initrd[class] : image_search_path[class];
}
+static char **make_possible_filenames(ImageClass class, const char *image_name) {
+ _cleanup_strv_free_ char **l = NULL;
+
+ assert(image_name);
+
+ FOREACH_STRING(v_suffix, "", ".v")
+ FOREACH_STRING(format_suffix, "", ".raw") {
+ _cleanup_free_ char *j = NULL;
+ const char *class_suffix;
+
+ class_suffix = image_class_suffix_to_string(class);
+ if (class_suffix) {
+ j = strjoin(image_name, class_suffix, format_suffix, v_suffix);
+ if (!j)
+ return NULL;
+
+ if (strv_consume(&l, TAKE_PTR(j)) < 0)
+ return NULL;
+ }
+
+ j = strjoin(image_name, format_suffix, v_suffix);
+ if (!j)
+ return NULL;
+
+ if (strv_consume(&l, TAKE_PTR(j)) < 0)
+ return NULL;
+ }
+
+ return TAKE_PTR(l);
+}
+
int image_find(ImageClass class,
const char *name,
const char *root,
if (!image_name_is_valid(name))
return -ENOENT;
+ _cleanup_strv_free_ char **names = make_possible_filenames(class, name);
+ if (!names)
+ return -ENOMEM;
+
NULSTR_FOREACH(path, pick_image_search_path(class)) {
_cleanup_free_ char *resolved = NULL;
_cleanup_closedir_ DIR *d = NULL;
* to symlink block devices into the search path. (For now, we disable that when operating
* relative to some root directory.) */
flags = root ? AT_SYMLINK_NOFOLLOW : 0;
- if (fstatat(dirfd(d), name, &st, flags) < 0) {
- _cleanup_free_ char *raw = NULL;
- if (errno != ENOENT)
- return -errno;
+ STRV_FOREACH(n, names) {
+ _cleanup_free_ char *fname_buf = NULL;
+ const char *fname = *n;
- raw = strjoin(name, ".raw");
- if (!raw)
- return -ENOMEM;
+ if (fstatat(dirfd(d), fname, &st, flags) < 0) {
+ if (errno != ENOENT)
+ return -errno;
- if (fstatat(dirfd(d), raw, &st, flags) < 0) {
- if (errno == ENOENT)
+ continue; /* Vanished while we were looking at it */
+ }
+
+ if (endswith(fname, ".raw")) {
+ if (!S_ISREG(st.st_mode)) {
+ log_debug("Ignoring non-regular file '%s' with .raw suffix.", fname);
continue;
+ }
- return -errno;
- }
+ } else if (endswith(fname, ".v")) {
- if (!S_ISREG(st.st_mode))
- continue;
+ if (!S_ISDIR(st.st_mode)) {
+ log_debug("Ignoring non-directory file '%s' with .v suffix.", fname);
+ continue;
+ }
+
+ _cleanup_free_ char *suffix = NULL;
+ suffix = strdup(ASSERT_PTR(startswith(fname, name)));
+ if (!suffix)
+ return -ENOMEM;
+
+ *ASSERT_PTR(endswith(suffix, ".v")) = 0;
+
+ _cleanup_free_ char *vp = path_join(resolved, fname);
+ if (!vp)
+ return -ENOMEM;
+
+ PickFilter filter = {
+ .type_mask = endswith(suffix, ".raw") ? (UINT32_C(1) << DT_REG) | (UINT32_C(1) << DT_BLK) : (UINT32_C(1) << DT_DIR),
+ .basename = name,
+ .architecture = _ARCHITECTURE_INVALID,
+ .suffix = suffix,
+ };
+
+ _cleanup_(pick_result_done) PickResult result = PICK_RESULT_NULL;
+ r = path_pick(root,
+ /* toplevel_fd= */ AT_FDCWD,
+ vp,
+ &filter,
+ PICK_ARCHITECTURE|PICK_TRIES,
+ &result);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to pick versioned image on '%s', skipping: %m", vp);
+ continue;
+ }
+ if (!result.path) {
+ log_debug("Found versioned directory '%s', without matching entry, skipping: %m", vp);
+ continue;
+ }
+
+ /* Refresh the stat data for the discovered target */
+ st = result.st;
+
+ _cleanup_free_ char *bn = NULL;
+ r = path_extract_filename(result.path, &bn);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to extract basename of image path '%s', skipping: %m", result.path);
+ continue;
+ }
+
+ fname_buf = path_join(fname, bn);
+ if (!fname_buf)
+ return log_oom();
- r = image_make(class, name, dirfd(d), resolved, raw, &st, ret);
+ fname = fname_buf;
- } else {
- if (!S_ISDIR(st.st_mode) && !S_ISBLK(st.st_mode))
+ } else if (!S_ISDIR(st.st_mode) && !S_ISBLK(st.st_mode)) {
+ log_debug("Ignoring non-directory and non-block device file '%s' without suffix.", fname);
continue;
+ }
- r = image_make(class, name, dirfd(d), resolved, name, &st, ret);
- }
- if (IN_SET(r, -ENOENT, -EMEDIUMTYPE))
- continue;
- if (r < 0)
- return r;
+ r = image_make(class, name, dirfd(d), resolved, fname, &st, ret);
+ if (IN_SET(r, -ENOENT, -EMEDIUMTYPE))
+ continue;
+ if (r < 0)
+ return r;
- if (ret)
- (*ret)->discoverable = true;
+ if (ret)
+ (*ret)->discoverable = true;
- return 1;
+ return 1;
+ }
}
if (class == IMAGE_MACHINE && streq(name, ".host")) {
if (ret)
(*ret)->discoverable = true;
- return r;
+ return 1;
}
return -ENOENT;
return r;
FOREACH_DIRENT_ALL(de, d, return -errno) {
+ _cleanup_free_ char *pretty = NULL, *fname_buf = NULL;
_cleanup_(image_unrefp) Image *image = NULL;
- _cleanup_free_ char *pretty = NULL;
+ const char *fname = de->d_name;
struct stat st;
int flags;
- if (dot_or_dot_dot(de->d_name))
+ if (dot_or_dot_dot(fname))
continue;
/* As mentioned above, we follow symlinks on this fstatat(), because we want to
* permit people to symlink block devices into the search path. */
flags = root ? AT_SYMLINK_NOFOLLOW : 0;
- if (fstatat(dirfd(d), de->d_name, &st, flags) < 0) {
+ if (fstatat(dirfd(d), fname, &st, flags) < 0) {
if (errno == ENOENT)
continue;
return -errno;
}
- if (S_ISREG(st.st_mode))
- r = extract_pretty(de->d_name, image_class_suffix_to_string(class), ".raw", &pretty);
- else if (S_ISDIR(st.st_mode))
- r = extract_pretty(de->d_name, image_class_suffix_to_string(class), NULL, &pretty);
- else if (S_ISBLK(st.st_mode))
- r = extract_pretty(de->d_name, NULL, NULL, &pretty);
- else {
- log_debug("Skipping directory entry '%s', which is neither regular file, directory nor block device.", de->d_name);
- continue;
- }
- if (r < 0) {
- log_debug_errno(r, "Skipping directory entry '%s', which doesn't look like an image.", de->d_name);
+ if (S_ISREG(st.st_mode)) {
+ r = extract_image_basename(
+ fname,
+ image_class_suffix_to_string(class),
+ STRV_MAKE(".raw"),
+ &pretty,
+ /* suffix= */ NULL);
+ if (r < 0) {
+ log_debug_errno(r, "Skipping directory entry '%s', which doesn't look like an image.", fname);
+ continue;
+ }
+ } else if (S_ISDIR(st.st_mode)) {
+ const char *v;
+
+ v = endswith(fname, ".v");
+ if (v) {
+ _cleanup_free_ char *suffix = NULL, *nov = NULL;
+
+ nov = strndup(fname, v - fname); /* Chop off the .v */
+ if (!nov)
+ return -ENOMEM;
+
+ r = extract_image_basename(
+ nov,
+ image_class_suffix_to_string(class),
+ STRV_MAKE(".raw", ""),
+ &pretty,
+ &suffix);
+ if (r < 0) {
+ log_debug_errno(r, "Skipping directory entry '%s', which doesn't look like a versioned image.", fname);
+ continue;
+ }
+
+ _cleanup_free_ char *vp = path_join(resolved, fname);
+ if (!vp)
+ return -ENOMEM;
+
+ PickFilter filter = {
+ .type_mask = endswith(suffix, ".raw") ? (UINT32_C(1) << DT_REG) | (UINT32_C(1) << DT_BLK) : (UINT32_C(1) << DT_DIR),
+ .basename = pretty,
+ .architecture = _ARCHITECTURE_INVALID,
+ .suffix = suffix,
+ };
+
+ _cleanup_(pick_result_done) PickResult result = PICK_RESULT_NULL;
+ r = path_pick(root,
+ /* toplevel_fd= */ AT_FDCWD,
+ vp,
+ &filter,
+ PICK_ARCHITECTURE|PICK_TRIES,
+ &result);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to pick versioned image on '%s', skipping: %m", vp);
+ continue;
+ }
+ if (!result.path) {
+ log_debug("Found versioned directory '%s', without matching entry, skipping: %m", vp);
+ continue;
+ }
+
+ /* Refresh the stat data for the discovered target */
+ st = result.st;
+
+ _cleanup_free_ char *bn = NULL;
+ r = path_extract_filename(result.path, &bn);
+ if (r < 0) {
+ log_debug_errno(r, "Failed to extract basename of image path '%s', skipping: %m", result.path);
+ continue;
+ }
+
+ fname_buf = path_join(fname, bn);
+ if (!fname_buf)
+ return log_oom();
+
+ fname = fname_buf;
+ } else {
+ r = extract_image_basename(
+ fname,
+ image_class_suffix_to_string(class),
+ /* format_suffix= */ NULL,
+ &pretty,
+ /* ret_suffix= */ NULL);
+ if (r < 0) {
+ log_debug_errno(r, "Skipping directory entry '%s', which doesn't look like an image.", fname);
+ continue;
+ }
+ }
+
+ } else if (S_ISBLK(st.st_mode)) {
+ r = extract_image_basename(
+ fname,
+ /* class_suffix= */ NULL,
+ /* format_suffix= */ NULL,
+ &pretty,
+ /* ret_v_suffix= */ NULL);
+ if (r < 0) {
+ log_debug_errno(r, "Skipping directory entry '%s', which doesn't look like an image.", fname);
+ continue;
+ }
+ } else {
+ log_debug("Skipping directory entry '%s', which is neither regular file, directory nor block device.", fname);
continue;
}
if (hashmap_contains(h, pretty))
continue;
- r = image_make(class, pretty, dirfd(d), resolved, de->d_name, &st, &image);
+ r = image_make(class, pretty, dirfd(d), resolved, fname, &st, &image);
if (IN_SET(r, -ENOENT, -EMEDIUMTYPE))
continue;
if (r < 0)
projects / thirdparty / systemd.git / commitdiff
