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file_storage: Handle STATE_DIRECTORY containing multiple paths

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As per systemd's documentation:
If multiple directories are set, then in the environment variable the
paths are concatenated with colon (":").

Handle that case by splitting the paths if there's a ":" in the
variable.

Closes: #50
This commit is contained in:
Bastien Nocera
2020-03-17 15:23:13 +01:00
parent 6a1fffae82
commit fd733e55be
1 changed files with 20 additions and 5 deletions
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25
src/file_storage.c
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@ -42,18 +42,33 @@
#define FILE_STORAGE_PATH "/var/lib/fprint" #define FILE_STORAGE_PATH "/var/lib/fprint"
#define DIR_PERMS 0700 #define DIR_PERMS 0700
static char *storage_path = NULL;
static const char *get_storage_path(void) static const char *get_storage_path(void)
{ {
const char *path; const char *path = NULL;
if (storage_path != NULL)
return storage_path;
/* set by systemd >= 240 to an absolute path /* set by systemd >= 240 to an absolute path
* taking into account the StateDirectory * taking into account the StateDirectory
* unit file setting */ * unit file setting */
path = g_getenv ("STATE_DIRECTORY"); path = g_getenv ("STATE_DIRECTORY");
if (path != NULL) if (path != NULL) {
return path; /* If multiple directories are set, then in the environment variable
* the paths are concatenated with colon (":"). */
if (strchr (path, ':')) {
g_auto(GStrv) elems = NULL;
elems = g_strsplit (path, ":", -1);
storage_path = g_strdup (elems[0]);
}
}
return FILE_STORAGE_PATH; if (storage_path == NULL)
storage_path = g_strdup (FILE_STORAGE_PATH);
return storage_path;
} }
static char *get_path_to_storedir(const char *driver, const char * device_id, char *base_store) static char *get_path_to_storedir(const char *driver, const char * device_id, char *base_store)
@ -296,6 +311,6 @@ int file_storage_init(void)
int file_storage_deinit(void) int file_storage_deinit(void)
{ {
/* Nothing to do */ g_clear_pointer (&storage_path, g_free);
return 0; return 0;
} }