diff options
| -rw-r--r-- | udev.c | 39 | ||||
| -rw-r--r-- | udevdb.c | 25 | ||||
| -rw-r--r-- | udevdb.h | 1 |
3 files changed, 57 insertions, 8 deletions
@@ -82,6 +82,16 @@ static inline char *get_seqnum(void) return seqnum; } +static void print_record(char *path, struct udevice *dev) +{ + printf("P: %s\n", path); + printf("N: %s\n", dev->name); + printf("S: %s\n", dev->symlink); + printf("O: %s\n", dev->owner); + printf("G: %s\n", dev->group); + printf("\n"); +} + enum query_type { NONE, NAME, @@ -92,7 +102,7 @@ enum query_type { static inline int udev_user(int argc, char **argv) { - static const char short_options[] = "p:q:rVh"; + static const char short_options[] = "dp:q:rVh"; int option; int retval = -EINVAL; struct udevice dev; @@ -144,6 +154,16 @@ static inline int udev_user(int argc, char **argv) root = 1; break; + case 'd': + retval = udevdb_open_ro(); + if (retval != 0) { + printf("unable to open udev database\n"); + return -EACCES; + } + retval = udevdb_dump(print_record); + udevdb_exit(); + return retval; + case 'V': printf("udev, version %s\n", UDEV_VERSION); return 0; @@ -206,12 +226,17 @@ static inline int udev_user(int argc, char **argv) } help: - printf("Usage: [-qrVh]\n" - " -q <name> query database for the specified value\n" - " -p <path> device path used for query\n" - " -r print udev root\n" - " -V print udev version\n" - " -h print this help text\n" + printf("Usage: [-pqrdVh]\n" + " -q TYPE query database for the specified value:\n" + " 'name' name of device node\n" + " 'symlink' pointing to node\n" + " 'owner' of node\n" + " 'group' of node\n" + " -p PATH sysfs device path used for query\n" + " -r print udev root\n" + " -d dump whole database\n" + " -V print udev version\n" + " -h print this help text\n" "\n"); return retval; } @@ -124,7 +124,7 @@ int udevdb_init(int init_flag) dbg("unable to initialize in-memory database"); else dbg("unable to initialize database at '%s'", udev_db_filename); - return -EINVAL; + return -EACCES; } return 0; } @@ -137,7 +137,30 @@ int udevdb_open_ro(void) udevdb = tdb_open(udev_db_filename, 0, 0, O_RDONLY, 0); if (udevdb == NULL) { dbg("unable to open database at '%s'", udev_db_filename); + return -EACCES; + } + return 0; +} + +void (*user_record_callback) (char *path, struct udevice *dev); + +static int traverse_callback(TDB_CONTEXT *tdb, TDB_DATA key, TDB_DATA dbuf, void *state) +{ + user_record_callback((char*) key.dptr, (struct udevice*) dbuf.dptr); + return 0; +} + +/** + * udevdb_dump: dumps whole database by passing record data to user function + * @user_record_handler: user function called for every record in the database + */ +int udevdb_dump(void (*user_record_handler) (char *path, struct udevice *dev)) +{ + if (user_record_handler == NULL) { + dbg("invalid user record handling function"); return -EINVAL; } + user_record_callback = user_record_handler; + tdb_traverse(udevdb, traverse_callback, NULL); return 0; } @@ -12,6 +12,7 @@ extern void udevdb_exit(void); extern int udevdb_init(int init_flag); extern int udevdb_open_ro(void); +extern int udevdb_dump(void (*user_record_handler) (char *path, struct udevice *dev)); extern int udevdb_add_dev(const char *path, const struct udevice *dev); extern int udevdb_get_dev(const char *path, struct udevice *dev); |