X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udev_config.c;h=6bc070d63aeceef99ad7344fc5ac9001179eb1fa;hp=77ac38a791e1f891c5800517cedc3fd0411fd329;hb=b479b4887f5a0eb69b801645ab1b14636c4b06a2;hpb=e5e322bc627a07d29a07e08f7c96bd644a3ae057 diff --git a/udev_config.c b/udev_config.c index 77ac38a79..6bc070d63 100644 --- a/udev_config.c +++ b/udev_config.c @@ -28,6 +28,7 @@ #include #include #include +#include #include "libsysfs/sysfs/libsysfs.h" #include "udev_libc_wrapper.h" @@ -35,19 +36,18 @@ #include "udev_utils.h" #include "udev_version.h" #include "logging.h" -#include "udev_rules.h" /* global variables */ char sysfs_path[PATH_SIZE]; char udev_root[PATH_SIZE]; char udev_db_path[PATH_SIZE]; -char udev_rules_filename[PATH_SIZE]; char udev_config_filename[PATH_SIZE]; -int udev_log; +char udev_rules_filename[PATH_SIZE]; +int udev_log_priority; +int udev_run; int udev_dev_d; int udev_hotplug_d; - static int string_is_true(const char *str) { if (strcasecmp(str, "true") == 0) @@ -59,34 +59,79 @@ static int string_is_true(const char *str) return 0; } -static void init_variables(void) +static int log_priority(const char *priority) { - const char *env; + char *endptr; + int prio; - /* If any config values are specified, they will override these values. */ - strcpy(udev_root, UDEV_ROOT); - strcpy(udev_db_path, UDEV_DB); - strcpy(udev_config_filename, UDEV_CONFIG_FILE); - strcpy(udev_rules_filename, UDEV_RULES_FILE); + prio = strtol(priority, &endptr, 10); + if (endptr[0] == '\0') + return prio; + if (strncasecmp(priority, "err", 3) == 0) + return LOG_ERR; + if (strcasecmp(priority, "info") == 0) + return LOG_INFO; + if (strcasecmp(priority, "debug") == 0) + return LOG_DEBUG; + if (string_is_true(priority)) + return LOG_ERR; - udev_log = string_is_true(UDEV_LOG_DEFAULT); + return 0; +} - udev_dev_d = 1; - env = getenv("UDEV_NO_DEVD"); - if (env && string_is_true(env)) - udev_dev_d = 0; +static int get_key(char **line, char **key, char **value) +{ + char *linepos; + char *temp; - udev_hotplug_d = 1; - env = getenv("UDEV_NO_HOTPLUGD"); - if (env && string_is_true(env)) - udev_hotplug_d = 0; + linepos = *line; + if (!linepos) + return -1; + + /* skip whitespace */ + while (isspace(linepos[0])) + linepos++; + + /* get the key */ + *key = linepos; + while (1) { + linepos++; + if (linepos[0] == '\0') + return -1; + if (isspace(linepos[0])) + break; + if (linepos[0] == '=') + break; + } + + /* terminate key */ + linepos[0] = '\0'; + linepos++; + + /* skip whitespace */ + while (isspace(linepos[0])) + linepos++; + + /* get the value*/ + if (linepos[0] == '"') + linepos++; + else + return -1; + *value = linepos; + + temp = strchr(linepos, '"'); + if (!temp) + return -1; + temp[0] = '\0'; + + return 0; } static int parse_config_file(void) { char line[LINE_SIZE]; char *bufline; - char *temp; + char *linepos; char *variable; char *value; char *buf; @@ -97,10 +142,9 @@ static int parse_config_file(void) int retval = 0; if (file_map(udev_config_filename, &buf, &bufsize) != 0) { - dbg("can't open '%s' as config file", udev_config_filename); + err("can't open '%s' as config file", udev_config_filename); return -ENODEV; } - dbg("reading '%s' as config file", udev_config_filename); /* loop through the whole file */ lineno = 0; @@ -112,8 +156,7 @@ static int parse_config_file(void) lineno++; if (count >= sizeof(line)) { - info("line too long, conf line skipped %s, line %d", - udev_config_filename, lineno); + err("line too long, conf line skipped %s, line %d", udev_config_filename, lineno); continue; } @@ -129,37 +172,35 @@ static int parse_config_file(void) if (bufline[0] == COMMENT_CHARACTER) continue; - strlcpy(line, bufline, count); - temp = line; - dbg("read '%s'", temp); + strlcpy(line, bufline, count+1); - retval = parse_get_pair(&temp, &variable, &value); - if (retval != 0) - info("%s:%d:%Zd: error parsing '%s'", - udev_config_filename, lineno, temp-line, temp); - - dbg("variable='%s', value='%s'", variable, value); + linepos = line; + retval = get_key(&linepos, &variable, &value); + if (retval != 0) { + err("error parsing %s, line %d:%d", udev_config_filename, lineno, (int) (linepos-line)); + continue; + } if (strcasecmp(variable, "udev_root") == 0) { strlcpy(udev_root, value, sizeof(udev_root)); - no_trailing_slash(udev_root); + remove_trailing_char(udev_root, '/'); continue; } if (strcasecmp(variable, "udev_db") == 0) { strlcpy(udev_db_path, value, sizeof(udev_db_path)); - no_trailing_slash(udev_db_path); + remove_trailing_char(udev_db_path, '/'); continue; } if (strcasecmp(variable, "udev_rules") == 0) { strlcpy(udev_rules_filename, value, sizeof(udev_rules_filename)); - no_trailing_slash(udev_rules_filename); + remove_trailing_char(udev_rules_filename, '/'); continue; } if (strcasecmp(variable, "udev_log") == 0) { - udev_log = string_is_true(value); + udev_log_priority = log_priority(value); continue; } } @@ -168,39 +209,49 @@ static int parse_config_file(void) return retval; } -static void get_dirs(void) +void udev_init_config(void) { - char *temp; - int retval; - - retval = sysfs_get_mnt_path(sysfs_path, sizeof(sysfs_path)); - if (retval) - dbg("sysfs_get_mnt_path failed"); - - /* see if we should try to override any of the default values */ - if (getenv("UDEV_TEST") != NULL) { - temp = getenv("SYSFS_PATH"); - if (temp != NULL) { - strlcpy(sysfs_path, temp, sizeof(sysfs_path)); - no_trailing_slash(sysfs_path); - } + const char *env; + + strcpy(udev_root, UDEV_ROOT); + strcpy(udev_db_path, UDEV_DB); + strcpy(udev_config_filename, UDEV_CONFIG_FILE); + strcpy(udev_rules_filename, UDEV_RULES_FILE); + udev_log_priority = LOG_ERR; + udev_run = 1; + udev_dev_d = 1; + udev_hotplug_d = 1; + sysfs_get_mnt_path(sysfs_path, sizeof(sysfs_path)); + + /* disable RUN key execution */ + env = getenv("UDEV_RUN"); + if (env && !string_is_true(env)) + udev_run = 0; - temp = getenv("UDEV_CONFIG_FILE"); - if (temp != NULL) - strlcpy(udev_config_filename, temp, sizeof(udev_config_filename)); + env = getenv("UDEV_NO_DEVD"); + if (env && string_is_true(env)) + udev_dev_d = 0; + + env = getenv("UDEV_NO_HOTPLUGD"); + if (env && string_is_true(env)) + udev_hotplug_d = 0; + + env = getenv("UDEV_CONFIG_FILE"); + if (env) { + strlcpy(udev_config_filename, env, sizeof(udev_config_filename)); + remove_trailing_char(udev_config_filename, '/'); } parse_config_file(); + + env = getenv("UDEV_LOG"); + if (env) + udev_log_priority = log_priority(env); + dbg("sysfs_path='%s'", sysfs_path); + dbg("UDEV_CONFIG_FILE='%s'", udev_config_filename); dbg("udev_root='%s'", udev_root); - dbg("udev_config_filename='%s'", udev_config_filename); - dbg("udev_db_path='%s'", udev_db_path); - dbg("udev_rules_filename='%s'", udev_rules_filename); - dbg("udev_log=%d", udev_log); -} - -void udev_init_config(void) -{ - init_variables(); - get_dirs(); + dbg("udev_db='%s'", udev_db_path); + dbg("udev_rules='%s'", udev_rules_filename); + dbg("udev_log=%d", udev_log_priority); }