diff options
Diffstat (limited to 'udev/udevtest.c')
| -rw-r--r-- | udev/udevtest.c | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/udev/udevtest.c b/udev/udevtest.c new file mode 100644 index 0000000000..d5e90b02c6 --- /dev/null +++ b/udev/udevtest.c @@ -0,0 +1,207 @@ +/* + * Copyright (C) 2003-2004 Greg Kroah-Hartman <greg@kroah.com> + * Copyright (C) 2004-2006 Kay Sievers <kay.sievers@vrfy.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#include <stdlib.h> +#include <string.h> +#include <stdio.h> +#include <stddef.h> +#include <unistd.h> +#include <errno.h> +#include <ctype.h> +#include <fcntl.h> +#include <signal.h> +#include <syslog.h> +#include <getopt.h> + +#include "udev.h" +#include "udev_rules.h" + +static int import_uevent_var(const char *devpath) +{ + char path[PATH_SIZE]; + static char value[4096]; /* must stay, used with putenv */ + ssize_t size; + int fd; + char *key; + char *next; + int rc = -1; + + /* read 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) + goto out; + size = read(fd, value, sizeof(value)); + close(fd); + if (size < 0) + goto out; + value[size] = '\0'; + + /* import keys into environment */ + key = value; + while (key[0] != '\0') { + next = strchr(key, '\n'); + if (next == NULL) + goto out; + next[0] = '\0'; + info("import into environment: '%s'\n", key); + putenv(key); + key = &next[1]; + } + rc = 0; +out: + return rc; +} + +int udevtest(int argc, char *argv[], char *envp[]) +{ + int force = 0; + const char *action = "add"; + const char *subsystem = NULL; + const char *devpath = NULL; + struct udevice *udev; + struct sysfs_device *dev; + struct udev_rules rules = {}; + int retval; + int rc = 0; + + static const struct option options[] = { + { "action", 1, NULL, 'a' }, + { "subsystem", 1, NULL, 's' }, + { "force", 0, NULL, 'f' }, + { "help", 0, NULL, 'h' }, + {} + }; + + info("version %s\n", UDEV_VERSION); + udev_config_init(); + if (udev_log_priority < LOG_INFO) { + char priority[32]; + + udev_log_priority = LOG_INFO; + sprintf(priority, "%i", udev_log_priority); + setenv("UDEV_LOG", priority, 1); + } + + while (1) { + int option; + + option = getopt_long(argc, argv, "a:s:fh", options, NULL); + if (option == -1) + break; + + dbg("option '%c'\n", option); + switch (option) { + case 'a': + action = optarg; + break; + case 's': + subsystem = optarg; + break; + case 'f': + force = 1; + break; + case 'h': + printf("Usage: udevadm test OPTIONS <devpath>\n" + " --action=<string> set action string\n" + " --subsystem=<string> set subsystem string\n" + " --force don't skip node/link creation\n" + " --help print this help text\n\n"); + exit(0); + default: + exit(1); + } + } + devpath = argv[optind]; + + if (devpath == NULL) { + fprintf(stderr, "devpath parameter missing\n"); + rc = 1; + goto exit; + } + + printf("This program is for debugging only, it does not run any program,\n" + "specified by a RUN key. It may show incorrect results, because\n" + "some values may be different, or not available at a simulation run.\n" + "\n"); + + sysfs_init(); + udev_rules_init(&rules, 0); + + /* remove /sys if given */ + if (strncmp(devpath, sysfs_path, strlen(sysfs_path)) == 0) + devpath = &devpath[strlen(sysfs_path)]; + + dev = sysfs_device_get(devpath); + if (dev == NULL) { + fprintf(stderr, "unable to open device '%s'\n", devpath); + rc = 2; + goto exit; + } + + udev = udev_device_init(NULL); + if (udev == NULL) { + fprintf(stderr, "error initializing device\n"); + rc = 3; + goto exit; + } + + if (subsystem != NULL) + strlcpy(dev->subsystem, subsystem, sizeof(dev->subsystem)); + + /* override built-in sysfs device */ + udev->dev = dev; + strlcpy(udev->action, action, sizeof(udev->action)); + udev->devt = udev_device_get_devt(udev); + + /* simulate node creation with test flag */ + if (!force) + udev->test_run = 1; + + setenv("DEVPATH", udev->dev->devpath, 1); + setenv("SUBSYSTEM", udev->dev->subsystem, 1); + setenv("ACTION", udev->action, 1); + import_uevent_var(udev->dev->devpath); + + info("looking at device '%s' from subsystem '%s'\n", udev->dev->devpath, udev->dev->subsystem); + retval = udev_device_event(&rules, udev); + + if (udev->event_timeout >= 0) + info("custom event timeout: %i\n", udev->event_timeout); + + if (retval == 0 && !udev->ignore_device && udev_run) { + struct name_entry *name_loop; + + list_for_each_entry(name_loop, &udev->run_list, node) { + char program[PATH_SIZE]; + + strlcpy(program, name_loop->name, sizeof(program)); + udev_rules_apply_format(udev, program, sizeof(program)); + info("run: '%s'\n", program); + } + } + udev_device_cleanup(udev); + +exit: + udev_rules_cleanup(&rules); + sysfs_cleanup(); + return rc; +} |