diff options
Diffstat (limited to 'udevtrigger.c')
| -rw-r--r-- | udevtrigger.c | 142 |
1 files changed, 138 insertions, 4 deletions
diff --git a/udevtrigger.c b/udevtrigger.c index 0a9dc66909..7584e02a67 100644 --- a/udevtrigger.c +++ b/udevtrigger.c @@ -30,9 +30,12 @@ #include <fnmatch.h> #include <sys/stat.h> #include <sys/types.h> +#include <sys/socket.h> +#include <sys/un.h> #include "udev.h" #include "udevd.h" +#include "udev_rules.h" static int verbose; static int dry_run; @@ -41,6 +44,9 @@ LIST_HEAD(filter_subsystem_match_list); LIST_HEAD(filter_subsystem_nomatch_list); LIST_HEAD(filter_attr_match_list); LIST_HEAD(filter_attr_nomatch_list); +static int sock = -1; +static struct sockaddr_un saddr; +static socklen_t saddrlen; /* devices that should run last cause of their dependencies */ static int delay_device(const char *devpath) @@ -114,6 +120,113 @@ static void trigger_uevent(const char *devpath, const char *action) close(fd); } +static int pass_to_socket(const char *devpath, const char *action) +{ + struct udevice udev; + struct name_entry *name_loop; + char buf[4096]; + size_t bufpos = 0; + ssize_t count; + char path[PATH_SIZE]; + int fd; + char link_target[PATH_SIZE]; + int len; + int err = 0; + + udev_device_init(&udev); + udev_db_get_device(&udev, devpath); + + /* add header */ + bufpos = snprintf(buf, sizeof(buf)-1, "%s@%s", action, devpath); + bufpos++; + + /* add standard keys */ + bufpos += snprintf(&buf[bufpos], sizeof(buf)-1, "DEVPATH=%s", devpath); + bufpos++; + bufpos += snprintf(&buf[bufpos], sizeof(buf)-1, "ACTION=%s", action); + bufpos++; + + /* add subsystem */ + strlcpy(path, sysfs_path, sizeof(path)); + strlcat(path, devpath, sizeof(path)); + strlcat(path, "/subsystem", sizeof(path)); + len = readlink(path, link_target, sizeof(link_target)); + if (len > 0) { + char *pos; + + link_target[len] = '\0'; + pos = strrchr(link_target, '/'); + if (pos != NULL) { + bufpos += snprintf(&buf[bufpos], sizeof(buf)-1, "SUBSYSTEM=%s", &pos[1]); + bufpos++; + } + } + + /* add symlinks and node name */ + path[0] = '\0'; + list_for_each_entry(name_loop, &udev.symlink_list, node) { + strlcat(path, udev_root, sizeof(path)); + strlcat(path, "/", sizeof(path)); + strlcat(path, name_loop->name, sizeof(path)); + strlcat(path, " ", sizeof(path)); + } + remove_trailing_chars(path, ' '); + if (path[0] != '\0') { + bufpos += snprintf(&buf[bufpos], sizeof(buf)-1, "DEVLINKS=%s", path); + bufpos++; + } + if (udev.name[0] != '\0') { + strlcpy(path, udev_root, sizeof(path)); + strlcat(path, "/", sizeof(path)); + strlcat(path, udev.name, sizeof(path)); + bufpos += snprintf(&buf[bufpos], sizeof(buf)-1, "DEVNAME=%s", path); + bufpos++; + } + + /* add keys from device "uevent" file */ + strlcpy(path, sysfs_path, sizeof(path)); + strlcat(path, devpath, sizeof(path)); + strlcat(path, "/uevent", sizeof(path)); + fd = open(path, O_RDONLY); + if (fd >= 0) { + char value[4096]; + + count = read(fd, value, sizeof(value)); + close(fd); + if (count > 0) { + char *key; + + value[count] = '\0'; + key = value; + while (key[0] != '\0') { + char *next; + + next = strchr(key, '\n'); + if (next == NULL) + break; + next[0] = '\0'; + bufpos += strlcpy(&buf[bufpos], key, sizeof(buf) - bufpos-1); + bufpos++; + key = &next[1]; + } + } + } + + /* add keys from database */ + list_for_each_entry(name_loop, &udev.env_list, node) { + bufpos += strlcpy(&buf[bufpos], name_loop->name, sizeof(buf) - bufpos-1); + bufpos++; + } + if (bufpos > sizeof(buf)) + bufpos = sizeof(buf); + + count = sendto(sock, &buf, bufpos, 0, (struct sockaddr *)&saddr, saddrlen); + if (count < 0) + err = -1; + + return err; +} + static void exec_list(const char *action) { struct name_entry *loop_device; @@ -122,15 +235,20 @@ static void exec_list(const char *action) list_for_each_entry_safe(loop_device, tmp_device, &device_list, node) { if (delay_device(loop_device->name)) continue; - - trigger_uevent(loop_device->name, action); + if (sock) + pass_to_socket(loop_device->name, action); + else + trigger_uevent(loop_device->name, action); list_del(&loop_device->node); free(loop_device); } /* trigger remaining delayed devices */ list_for_each_entry_safe(loop_device, tmp_device, &device_list, node) { - trigger_uevent(loop_device->name, action); + if (sock) + pass_to_socket(loop_device->name, action); + else + trigger_uevent(loop_device->name, action); list_del(&loop_device->node); free(loop_device); } @@ -434,12 +552,14 @@ static void scan_failed(void) int udevtrigger(int argc, char *argv[], char *envp[]) { int failed = 0; + const char *sockpath = NULL; int option; const char *action = "add"; static const struct option options[] = { { "verbose", 0, NULL, 'v' }, { "dry-run", 0, NULL, 'n' }, { "retry-failed", 0, NULL, 'F' }, + { "socket", 1, NULL, 'o' }, { "help", 0, NULL, 'h' }, { "action", 1, NULL, 'c' }, { "subsystem-match", 1, NULL, 's' }, @@ -455,7 +575,7 @@ int udevtrigger(int argc, char *argv[], char *envp[]) sysfs_init(); while (1) { - option = getopt_long(argc, argv, "vnFhc:s:S:a:A:", options, NULL); + option = getopt_long(argc, argv, "vnFo:hc:s:S:a:A:", options, NULL); if (option == -1) break; @@ -469,6 +589,9 @@ int udevtrigger(int argc, char *argv[], char *envp[]) case 'F': failed = 1; break; + case 'o': + sockpath = optarg; + break; case 'c': action = optarg; break; @@ -504,6 +627,15 @@ int udevtrigger(int argc, char *argv[], char *envp[]) } } + if (sockpath != NULL) { + sock = socket(AF_LOCAL, SOCK_DGRAM, 0); + memset(&saddr, 0x00, sizeof(struct sockaddr_un)); + saddr.sun_family = AF_LOCAL; + /* abstract namespace only */ + strlcpy(&saddr.sun_path[1], sockpath, sizeof(saddr.sun_path)-1); + saddrlen = offsetof(struct sockaddr_un, sun_path) + strlen(saddr.sun_path+1) + 1; + } + if (failed) { scan_failed(); exec_list(action); @@ -540,6 +672,8 @@ exit: name_list_cleanup(&filter_attr_match_list); name_list_cleanup(&filter_attr_nomatch_list); + if (sock >= 0) + close(sock); sysfs_cleanup(); logging_close(); return 0; |