diff options
Diffstat (limited to 'udev.c')
| -rw-r--r-- | udev.c | 98 |
1 files changed, 67 insertions, 31 deletions
@@ -83,7 +83,8 @@ static inline char *get_seqnum(void) return seqnum; } -static void print_record(char *path, struct udevice *dev) +/* callback for database dump */ +static int print_record(char *path, struct udevice *dev) { printf("P: %s\n", path); printf("N: %s\n", dev->name); @@ -91,11 +92,13 @@ static void print_record(char *path, struct udevice *dev) printf("O: %s\n", dev->owner); printf("G: %s\n", dev->group); printf("\n"); + return 0; } enum query_type { NONE, NAME, + PATH, SYMLINK, OWNER, GROUP @@ -103,7 +106,7 @@ enum query_type { static inline int udev_user(int argc, char **argv) { - static const char short_options[] = "dp:q:rVh"; + static const char short_options[] = "dn:p:q:rVh"; int option; int retval = -EINVAL; struct udevice dev; @@ -111,6 +114,7 @@ static inline int udev_user(int argc, char **argv) enum query_type query = NONE; char result[NAME_SIZE] = ""; char path[NAME_SIZE] = ""; + char name[NAME_SIZE] = ""; /* get command line options */ while (1) { @@ -120,6 +124,11 @@ static inline int udev_user(int argc, char **argv) dbg("option '%c'", option); switch (option) { + case 'n': + dbg("udev name: %s\n", optarg); + strfieldcpy(name, optarg); + break; + case 'p': dbg("udev path: %s\n", optarg); strfieldcpy(path, optarg); @@ -148,6 +157,11 @@ static inline int udev_user(int argc, char **argv) break; } + if (strcmp(optarg, "path") == 0) { + query = PATH; + break; + } + printf("unknown query type\n"); return -EINVAL; @@ -161,7 +175,7 @@ static inline int udev_user(int argc, char **argv) printf("unable to open udev database\n"); return -EACCES; } - retval = udevdb_dump(print_record); + retval = udevdb_call_foreach(print_record); udevdb_exit(); return retval; @@ -179,44 +193,63 @@ static inline int udev_user(int argc, char **argv) /* process options */ if (query != NONE) { - if (path[0] == '\0') { - printf("query needs device path specified\n"); - return -EINVAL; - } - retval = udevdb_open_ro(); if (retval != 0) { printf("unable to open udev database\n"); return -EACCES; } - retval = udevdb_get_dev(path, &dev); - if (retval == 0) { - switch(query) { - case NAME: - if (root) + + if (path[0] != '\0') { + retval = udevdb_get_dev(path, &dev); + if (retval != 0) { + printf("device not found in database\n"); + goto exit; + } + goto print; + } + + if (name[0] != '\0') { + retval = udevdb_get_dev_byname(name, path, &dev); + if (retval != 0) { + printf("device not found in database\n"); + goto exit; + } + goto print; + } + + printf("query needs device path(-p) or node name(-n) specified\n"); + goto exit; + +print: + switch(query) { + case NAME: + if (root) strfieldcpy(result, udev_root); - strncat(result, dev.name, sizeof(result)); - break; + strncat(result, dev.name, sizeof(result)); + break; - case SYMLINK: - strfieldcpy(result, dev.symlink); - break; + case SYMLINK: + strfieldcpy(result, dev.symlink); + break; - case GROUP: - strfieldcpy(result, dev.group); - break; + case GROUP: + strfieldcpy(result, dev.group); + break; - case OWNER: - strfieldcpy(result, dev.owner); - break; + case OWNER: + strfieldcpy(result, dev.owner); + break; - default: - break; - } - printf("%s\n", result); - } else { - printf("device not found in udev database\n"); + case PATH: + strfieldcpy(result, path); + break; + + default: + goto exit; } + printf("%s\n", result); + +exit: udevdb_exit(); return retval; } @@ -227,13 +260,16 @@ static inline int udev_user(int argc, char **argv) } help: - printf("Usage: [-pqrdVh]\n" + printf("Usage: [-npqrdVh]\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" + " 'path' sysfs device path\n" " -p PATH sysfs device path used for query\n" + " -n NAME node name used for query\n" + "\n" " -r print udev root\n" " -d dump whole database\n" " -V print udev version\n" |