diff options
Diffstat (limited to 'udev')
| -rw-r--r-- | udev/lib/exported_symbols | 2 | ||||
| -rw-r--r-- | udev/lib/libudev-device.c | 17 | ||||
| -rw-r--r-- | udev/lib/libudev.h | 2 | ||||
| -rw-r--r-- | udev/lib/test-libudev.c | 78 | ||||
| -rw-r--r-- | udev/udevadm-info.c | 23 |
5 files changed, 87 insertions, 35 deletions
diff --git a/udev/lib/exported_symbols b/udev/lib/exported_symbols index 058b79afa8..f53165d810 100644 --- a/udev/lib/exported_symbols +++ b/udev/lib/exported_symbols @@ -8,7 +8,7 @@ udev_set_log_priority udev_get_sys_path udev_get_dev_path udev_device_new_from_devpath -udev_device_new_from_parent +udev_device_get_parent udev_device_ref udev_device_unref udev_device_get_udev diff --git a/udev/lib/libudev-device.c b/udev/lib/libudev-device.c index f3f20cd992..f400b621b7 100644 --- a/udev/lib/libudev-device.c +++ b/udev/lib/libudev-device.c @@ -34,6 +34,7 @@ struct udev_device { int refcount; struct udev *udev; + struct udev_device *parent_device; char *syspath; const char *devpath; const char *sysname; @@ -196,7 +197,7 @@ struct udev_device *udev_device_new_from_devpath(struct udev *udev, const char * util_strlcat(path, devpath, sizeof(path)); util_strlcat(path, "/uevent", sizeof(path)); if (stat(path, &statbuf) != 0) { - info(udev, "not a device :%s\n", path); + info(udev, "not a device :%s\n", devpath); return NULL; } @@ -212,11 +213,10 @@ struct udev_device *udev_device_new_from_devpath(struct udev *udev, const char * if (device_read_db(udev_device) >= 0) info(udev, "device %p filled with udev database data\n", udev_device); - return udev_device; } -struct udev_device *udev_device_new_from_parent(struct udev_device *udev_device) +static struct udev_device *device_new_from_parent(struct udev_device *udev_device) { struct udev_device *udev_device_parent = NULL; char path[UTIL_PATH_SIZE]; @@ -228,7 +228,7 @@ struct udev_device *udev_device_new_from_parent(struct udev_device *udev_device) util_strlcpy(path, udev_device_get_devpath(udev_device), sizeof(path)); while (1) { pos = strrchr(path, '/'); - if (pos == NULL) + if (pos == path || pos == NULL) break; pos[0] = '\0'; udev_device_parent = udev_device_new_from_devpath(udev_device->udev, path); @@ -238,6 +238,13 @@ struct udev_device *udev_device_new_from_parent(struct udev_device *udev_device) return udev_device_parent; } +struct udev_device *udev_device_get_parent(struct udev_device *udev_device) +{ + if (udev_device->parent_device == NULL) + udev_device->parent_device = device_new_from_parent(udev_device); + return udev_device->parent_device; +} + /** * udev_device_get_udev: * @udev_device: udev device @@ -284,6 +291,8 @@ void udev_device_unref(struct udev_device *udev_device) udev_device->refcount--; if (udev_device->refcount > 0) return; + if (udev_device->parent_device != NULL) + udev_device_unref(udev_device->parent_device); free(udev_device->syspath); free(udev_device->devname); free(udev_device->subsystem); diff --git a/udev/lib/libudev.h b/udev/lib/libudev.h index c3d0092f4e..703364380b 100644 --- a/udev/lib/libudev.h +++ b/udev/lib/libudev.h @@ -46,7 +46,7 @@ extern void udev_selinux_lsetfilecon(struct udev *udev, const char *file, unsign struct udev_device; extern struct udev_device *udev_device_new_from_devpath(struct udev *udev, const char *devpath); -extern struct udev_device *udev_device_new_from_parent(struct udev_device *udev_device); +extern struct udev_device *udev_device_get_parent(struct udev_device *udev_device); extern struct udev_device *udev_device_ref(struct udev_device *udev_device); extern void udev_device_unref(struct udev_device *udev_device); extern struct udev *udev_device_get_udev(struct udev_device *udev_device); diff --git a/udev/lib/test-libudev.c b/udev/lib/test-libudev.c index 7795f5f0fb..b30117627f 100644 --- a/udev/lib/test-libudev.c +++ b/udev/lib/test-libudev.c @@ -24,6 +24,8 @@ #include <unistd.h> #include <errno.h> #include <string.h> +#include <getopt.h> +#include <syslog.h> #include <sys/select.h> #include "libudev.h" @@ -89,17 +91,26 @@ static int test_device(struct udev *udev, const char *devpath) static int test_device_parents(struct udev *udev, const char *devpath) { struct udev_device *device; + struct udev_device *device_parent; printf("looking at device: %s\n", devpath); device = udev_device_new_from_devpath(udev, devpath); - while (device != NULL) { - struct udev_device *device_parent; + if (device == NULL) + return -1; + + device_parent = device; + do { + print_device(device_parent); + device_parent = udev_device_get_parent(device_parent); + } while (device_parent != NULL); + + device_parent = device; + do { + print_device(device_parent); + device_parent = udev_device_get_parent(device_parent); + } while (device_parent != NULL); + udev_device_unref(device); - print_device(device); - device_parent = udev_device_new_from_parent(device); - udev_device_unref(device); - device = device_parent; - } return 0; } @@ -172,20 +183,21 @@ static int test_monitor(struct udev *udev, const char *socket_path) int main(int argc, char *argv[], char *envp[]) { - struct udev *udev; + struct udev *udev = NULL; + static const struct option options[] = { + { "devpath", 1, NULL, 'p' }, + { "subsystem", 1, NULL, 's' }, + { "socket", 1, NULL, 'S' }, + { "debug", 0, NULL, 'd' }, + { "help", 0, NULL, 'h' }, + { "version", 0, NULL, 'V' }, + {} + }; const char *devpath = "/devices/virtual/mem/null"; const char *subsystem = NULL; const char *socket = "@/org/kernel/udev/monitor"; const char *str; - if (argv[1] != NULL) { - devpath = argv[1]; - if (argv[2] != NULL) - subsystem = argv[2]; - if (argv[3] != NULL) - socket = argv[3]; - } - udev = udev_new(); printf("context: %p\n", udev); if (udev == NULL) { @@ -195,6 +207,38 @@ int main(int argc, char *argv[], char *envp[]) udev_set_log_fn(udev, log_fn); printf("set log: %p\n", log_fn); + while (1) { + int option; + + option = getopt_long(argc, argv, "+dhV", options, NULL); + if (option == -1) + break; + + switch (option) { + case 'p': + devpath = optarg; + break; + case 's': + subsystem = optarg; + break; + case 'S': + socket = optarg; + break; + case 'd': + if (udev_get_log_priority(udev) < LOG_INFO) + udev_set_log_priority(udev, LOG_INFO); + break; + case 'h': + printf("--debug --devpath= --subsystem= --socket= --help\n"); + goto out; + case 'V': + printf("%s\n", VERSION); + goto out; + default: + goto out; + } + } + str = udev_get_sys_path(udev); printf("sys_path: '%s'\n", str); str = udev_get_dev_path(udev); @@ -204,7 +248,7 @@ int main(int argc, char *argv[], char *envp[]) test_device_parents(udev, devpath); test_enumerate(udev, subsystem); test_monitor(udev, socket); - +out: udev_unref(udev); return 0; } diff --git a/udev/udevadm-info.c b/udev/udevadm-info.c index 3be5f3154b..6f0678e932 100644 --- a/udev/udevadm-info.c +++ b/udev/udevadm-info.c @@ -92,6 +92,7 @@ static void print_all_attributes(struct udev *udev, const char *devpath, const c static int print_device_chain(struct udev *udev, const char *devpath) { struct udev_device *device; + struct udev_device *device_parent; const char *str; device = udev_device_new_from_devpath(udev, devpath); @@ -118,27 +119,25 @@ static int print_device_chain(struct udev *udev, const char *devpath) printf(" DRIVER==\"%s\"\n", str); print_all_attributes(udev, udev_device_get_devpath(device), "ATTR"); - while (device != NULL) { - struct udev_device *device_parent; - - device_parent = udev_device_new_from_parent(device); - udev_device_unref(device); + device_parent = device; + do { + device_parent = udev_device_get_parent(device_parent); if (device_parent == NULL) break; - device = device_parent; - printf(" looking at parent device '%s':\n", udev_device_get_devpath(device)); - printf(" KERNELS==\"%s\"\n", udev_device_get_sysname(device)); - str = udev_device_get_subsystem(device); + printf(" looking at parent device '%s':\n", udev_device_get_devpath(device_parent)); + printf(" KERNELS==\"%s\"\n", udev_device_get_sysname(device_parent)); + str = udev_device_get_subsystem(device_parent); if (str == NULL) str = ""; printf(" SUBSYSTEMS==\"%s\"\n", str); - str = udev_device_get_driver(device); + str = udev_device_get_driver(device_parent); if (str == NULL) str = ""; printf(" DRIVERS==\"%s\"\n", str); - print_all_attributes(udev, udev_device_get_devpath(device), "ATTRS"); - } + print_all_attributes(udev, udev_device_get_devpath(device_parent), "ATTRS"); + } while (device_parent != NULL); + udev_device_unref(device); return 0; } |