X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udevstart.c;h=d9912466ca91f5f5aea9258d0237e7543dab317f;hp=97d38490aea0cbf6f77bccfe9a5e7f377a5461db;hb=a72e3f666b897f94a64547ace3af74785d2f6771;hpb=56a8a624eef99f5324b54fad466b144aa4f882c2 diff --git a/udevstart.c b/udevstart.c index 97d38490a..d9912466c 100644 --- a/udevstart.c +++ b/udevstart.c @@ -36,22 +36,37 @@ #include #include "libsysfs/sysfs/libsysfs.h" +#include "udev_libc_wrapper.h" +#include "udev_sysfs.h" +#include "udev.h" +#include "udev_version.h" #include "logging.h" -#include "namedev.h" +#include "udev_rules.h" #include "udev_utils.h" #include "list.h" -#include "udev.h" + +static const char *udev_run_str; +static const char *udev_log_str; +static struct udev_rules rules; #ifdef USE_LOG -void log_message(int level, const char *format, ...) +void log_message(int priority, const char *format, ...) { + va_list args; + + if (priority > udev_log_priority) + return; + + va_start(args, format); + vsyslog(priority, format, args); + va_end(args); } #endif struct device { - struct list_head list; - char path[DEVPATH_SIZE]; - char subsys[SUBSYSTEM_SIZE]; + struct list_head node; + char path[PATH_SIZE]; + char subsys[NAME_SIZE]; }; /* sort files in lexical order */ @@ -62,7 +77,7 @@ static int device_list_insert(const char *path, char *subsystem, struct list_hea dbg("insert: '%s'\n", path); - list_for_each_entry(loop_device, device_list, list) { + list_for_each_entry(loop_device, device_list, node) { if (strcmp(loop_device->path, path) > 0) { break; } @@ -74,9 +89,9 @@ static int device_list_insert(const char *path, char *subsystem, struct list_hea return -ENOMEM; } - strfieldcpy(new_device->path, path); - strfieldcpy(new_device->subsys, subsystem); - list_add_tail(&new_device->list, &loop_device->list); + strlcpy(new_device->path, path, sizeof(new_device->path)); + strlcpy(new_device->subsys, subsystem, sizeof(new_device->subsys)); + list_add_tail(&new_device->node, &loop_device->node); dbg("add '%s' from subsys '%s'", new_device->path, new_device->subsys); return 0; } @@ -101,27 +116,52 @@ static int add_device(const char *path, const char *subsystem) devpath = &path[strlen(sysfs_path)]; - /* set environment for callouts and dev.d/ */ + /* clear and set environment for next event */ + clearenv(); + setenv("ACTION", "add", 1); setenv("DEVPATH", devpath, 1); setenv("SUBSYSTEM", subsystem, 1); - + setenv("UDEV_START", "1", 1); + if (udev_log_str) + setenv("UDEV_LOG", udev_log_str, 1); + if (udev_run_str) + setenv("UDEV_RUN", udev_run_str, 1); dbg("exec: '%s' (%s)\n", devpath, path); class_dev = sysfs_open_class_device_path(path); if (class_dev == NULL) { - dbg ("sysfs_open_class_device_path failed"); - return -ENODEV; + dbg("sysfs_open_class_device_path failed"); + return -1; } - udev_init_device(&udev, devpath, subsystem); - udev_add_device(&udev, class_dev); + udev_init_device(&udev, devpath, subsystem, "add"); + udev.devt = get_devt(class_dev); + if (!udev.devt && udev.type != DEV_NET) { + dbg("sysfs_open_class_device_path failed"); + return -1; + } + udev_rules_get_name(&rules, &udev, class_dev); + if (udev.ignore_device) { + dbg("device event will be ignored"); + goto exit; + } + if (udev.name[0] == '\0') { + dbg("device node creation supressed"); + goto run; + } - /* run dev.d/ scripts if we created a node or changed a netif name */ - if (udev_dev_d && udev.devname[0] != '\0') { + udev_add_device(&udev, class_dev); + if (udev.devname[0] != '\0') setenv("DEVNAME", udev.devname, 1); - udev_multiplex_directory(&udev, DEVD_DIR, DEVD_SUFFIX); - } +run: + if (udev_run && !list_empty(&udev.run_list)) { + struct name_entry *name_loop; + dbg("executing run list"); + list_for_each_entry(name_loop, &udev.run_list, node) + execute_program(name_loop->name, udev.subsystem, NULL, 0, NULL); + } +exit: sysfs_close_class_device(class_dev); udev_cleanup_device(&udev); @@ -135,11 +175,11 @@ static void exec_list(struct list_head *device_list) int i; /* handle the "first" type devices first */ - list_for_each_entry_safe(loop_device, tmp_device, device_list, list) { + list_for_each_entry_safe(loop_device, tmp_device, device_list, node) { for (i = 0; first_list[i] != NULL; i++) { if (strncmp(loop_device->path, first_list[i], strlen(first_list[i])) == 0) { add_device(loop_device->path, loop_device->subsys); - list_del(&loop_device->list); + list_del(&loop_device->node); free(loop_device); break; } @@ -147,7 +187,7 @@ static void exec_list(struct list_head *device_list) } /* handle the devices we are allowed to, excluding the "last" type devices */ - list_for_each_entry_safe(loop_device, tmp_device, device_list, list) { + list_for_each_entry_safe(loop_device, tmp_device, device_list, node) { int found = 0; for (i = 0; last_list[i] != NULL; i++) { if (strncmp(loop_device->path, last_list[i], strlen(last_list[i])) == 0) { @@ -159,25 +199,25 @@ static void exec_list(struct list_head *device_list) continue; add_device(loop_device->path, loop_device->subsys); - list_del(&loop_device->list); + list_del(&loop_device->node); free(loop_device); } /* handle the rest of the devices left over, if any */ - list_for_each_entry_safe(loop_device, tmp_device, device_list, list) { + list_for_each_entry_safe(loop_device, tmp_device, device_list, node) { add_device(loop_device->path, loop_device->subsys); - list_del(&loop_device->list); + list_del(&loop_device->node); free(loop_device); } } static int has_devt(const char *directory) { - char filename[NAME_SIZE]; + char filename[PATH_SIZE]; struct stat statbuf; - snprintf(filename, NAME_SIZE, "%s/dev", directory); - filename[NAME_SIZE-1] = '\0'; + snprintf(filename, sizeof(filename), "%s/dev", directory); + filename[sizeof(filename)-1] = '\0'; if (stat(filename, &statbuf) == 0) return 1; @@ -187,26 +227,26 @@ static int has_devt(const char *directory) static void udev_scan_block(void) { - char base[NAME_SIZE]; + char base[PATH_SIZE]; DIR *dir; struct dirent *dent; LIST_HEAD(device_list); - snprintf(base, DEVPATH_SIZE, "%s/block", sysfs_path); - base[DEVPATH_SIZE-1] = '\0'; + snprintf(base, sizeof(base), "%s/block", sysfs_path); + base[sizeof(base)-1] = '\0'; dir = opendir(base); if (dir != NULL) { for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { - char dirname[DEVPATH_SIZE]; + char dirname[PATH_SIZE]; DIR *dir2; struct dirent *dent2; if (dent->d_name[0] == '.') continue; - snprintf(dirname, NAME_SIZE, "%s/%s", base, dent->d_name); - dirname[NAME_SIZE-1] = '\0'; + snprintf(dirname, sizeof(dirname), "%s/%s", base, dent->d_name); + dirname[sizeof(dirname)-1] = '\0'; if (has_devt(dirname)) device_list_insert(dirname, "block", &device_list); else @@ -216,13 +256,13 @@ static void udev_scan_block(void) dir2 = opendir(dirname); if (dir2 != NULL) { for (dent2 = readdir(dir2); dent2 != NULL; dent2 = readdir(dir2)) { - char dirname2[DEVPATH_SIZE]; + char dirname2[PATH_SIZE]; if (dent2->d_name[0] == '.') continue; - snprintf(dirname2, DEVPATH_SIZE, "%s/%s", dirname, dent2->d_name); - dirname2[DEVPATH_SIZE-1] = '\0'; + snprintf(dirname2, sizeof(dirname2), "%s/%s", dirname, dent2->d_name); + dirname2[sizeof(dirname2)-1] = '\0'; if (has_devt(dirname2)) device_list_insert(dirname2, "block", &device_list); @@ -237,37 +277,37 @@ static void udev_scan_block(void) static void udev_scan_class(void) { - char base[DEVPATH_SIZE]; + char base[PATH_SIZE]; DIR *dir; struct dirent *dent; LIST_HEAD(device_list); - snprintf(base, DEVPATH_SIZE, "%s/class", sysfs_path); - base[DEVPATH_SIZE-1] = '\0'; + snprintf(base, sizeof(base), "%s/class", sysfs_path); + base[sizeof(base)-1] = '\0'; dir = opendir(base); if (dir != NULL) { for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { - char dirname[DEVPATH_SIZE]; + char dirname[PATH_SIZE]; DIR *dir2; struct dirent *dent2; if (dent->d_name[0] == '.') continue; - snprintf(dirname, DEVPATH_SIZE, "%s/%s", base, dent->d_name); - dirname[DEVPATH_SIZE-1] = '\0'; + snprintf(dirname, sizeof(dirname), "%s/%s", base, dent->d_name); + dirname[sizeof(dirname)-1] = '\0'; dir2 = opendir(dirname); if (dir2 != NULL) { for (dent2 = readdir(dir2); dent2 != NULL; dent2 = readdir(dir2)) { - char dirname2[DEVPATH_SIZE]; + char dirname2[PATH_SIZE]; if (dent2->d_name[0] == '.') continue; - snprintf(dirname2, DEVPATH_SIZE, "%s/%s", dirname, dent2->d_name); - dirname2[DEVPATH_SIZE-1] = '\0'; + snprintf(dirname2, sizeof(dirname2), "%s/%s", dirname, dent2->d_name); + dirname2[sizeof(dirname2)-1] = '\0'; /* pass the net class as it is */ if (strcmp(dent->d_name, "net") == 0) @@ -298,7 +338,16 @@ int main(int argc, char *argv[], char *envp[]) { struct sigaction act; + logging_init("udevstart"); udev_init_config(); + dbg("version %s", UDEV_VERSION); + + udev_run_str = getenv("UDEV_RUN"); + udev_log_str = getenv("UDEV_LOG"); + + /* disable all logging if not explicitely requested */ + if (udev_log_str == NULL) + udev_log_priority = 0; /* set signal handlers */ memset(&act, 0x00, sizeof(act)); @@ -310,16 +359,14 @@ int main(int argc, char *argv[], char *envp[]) sigaction(SIGTERM, &act, NULL); /* trigger timeout to prevent hanging processes */ - alarm(ALARM_TIMEOUT); - - /* set environment for executed programs */ - setenv("ACTION", "add", 1); - setenv("UDEV_START", "1", 1); + alarm(UDEV_ALARM_TIMEOUT); - namedev_init(); + udev_rules_init(&rules, 1); udev_scan_block(); udev_scan_class(); + udev_rules_close(&rules); + logging_close(); return 0; }