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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
commit | b750101eb236130cf056c675997decbac904cc49 (patch) | |
tree | a5df1a06754bdd014cb975c051c83b01c9a97532 /src/libsystemd/sd-device/device-filter.c | |
parent | Initial commit. (diff) | |
download | systemd-b750101eb236130cf056c675997decbac904cc49.tar.xz systemd-b750101eb236130cf056c675997decbac904cc49.zip |
Adding upstream version 252.22.upstream/252.22
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/libsystemd/sd-device/device-filter.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/src/libsystemd/sd-device/device-filter.c b/src/libsystemd/sd-device/device-filter.c new file mode 100644 index 0000000..4101e7d --- /dev/null +++ b/src/libsystemd/sd-device/device-filter.c @@ -0,0 +1,115 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <fnmatch.h> + +#include "device-filter.h" +#include "path-util.h" + +int update_match_strv(Hashmap **match_strv, const char *key, const char *value, bool clear_on_null) { + char **strv; + int r; + + assert(match_strv); + assert(key); + + strv = hashmap_get(*match_strv, key); + if (strv) { + if (!value) { + char **v; + + if (strv_isempty(strv) || !clear_on_null) + return 0; + + /* Accept all value. Clear previous assignment. */ + + v = new0(char*, 1); + if (!v) + return -ENOMEM; + + strv_free_and_replace(strv, v); + } else { + if (strv_contains(strv, value)) + return 0; + + r = strv_extend(&strv, value); + if (r < 0) + return r; + } + + r = hashmap_update(*match_strv, key, strv); + if (r < 0) + return r; + + } else { + _cleanup_strv_free_ char **strv_alloc = NULL; + _cleanup_free_ char *key_alloc = NULL; + + key_alloc = strdup(key); + if (!key_alloc) + return -ENOMEM; + + strv_alloc = strv_new(value); + if (!strv_alloc) + return -ENOMEM; + + r = hashmap_ensure_put(match_strv, &string_hash_ops_free_strv_free, key_alloc, strv_alloc); + if (r < 0) + return r; + + TAKE_PTR(key_alloc); + TAKE_PTR(strv_alloc); + } + + return 1; +} + +static bool device_match_sysattr_value(sd_device *device, const char *sysattr, char * const *patterns) { + const char *value; + + assert(device); + assert(sysattr); + + if (sd_device_get_sysattr_value(device, sysattr, &value) < 0) + return false; + + return strv_fnmatch_or_empty(patterns, value, 0); +} + +bool device_match_sysattr(sd_device *device, Hashmap *match_sysattr, Hashmap *nomatch_sysattr) { + char * const *patterns; + const char *sysattr; + + assert(device); + + HASHMAP_FOREACH_KEY(patterns, sysattr, match_sysattr) + if (!device_match_sysattr_value(device, sysattr, patterns)) + return false; + + HASHMAP_FOREACH_KEY(patterns, sysattr, nomatch_sysattr) + if (device_match_sysattr_value(device, sysattr, patterns)) + return false; + + return true; +} + +bool device_match_parent(sd_device *device, Set *match_parent, Set *nomatch_parent) { + const char *syspath_parent, *syspath; + + assert(device); + + if (sd_device_get_syspath(device, &syspath) < 0) + return false; + + SET_FOREACH(syspath_parent, nomatch_parent) + if (path_startswith(syspath, syspath_parent)) + return false; + + if (set_isempty(match_parent)) + return true; + + SET_FOREACH(syspath_parent, match_parent) + if (path_startswith(syspath, syspath_parent)) + return true; + + return false; +} |