* Userspace devfs
*
* Copyright (C) 2003,2004 Greg Kroah-Hartman <greg@kroah.com>
+ * Copyright (C) 2003-2005 Kay Sievers <kay.sievers@vrfy.org>
*
*
* This program is free software; you can redistribute it and/or modify it
#include <ctype.h>
#include <unistd.h>
#include <sys/stat.h>
-#include <dirent.h>
#include <errno.h>
#include "udev.h"
-#include "udev_lib.h"
+#include "udev_utils.h"
#include "logging.h"
#include "namedev.h"
-LIST_HEAD(file_list);
-
+LIST_HEAD(config_device_list);
static int add_config_dev(struct config_device *new_dev)
{
{
dbg_parse("name='%s', symlink='%s', bus='%s', place='%s', id='%s', "
"sysfs_file[0]='%s', sysfs_value[0]='%s', "
- "kernel='%s', program='%s', result='%s'",
+ "kernel='%s', program='%s', result='%s'"
"owner='%s', group='%s', mode=%#o",
dev->name, dev->symlink, dev->bus, dev->place, dev->id,
dev->sysfs_pair[0].file, dev->sysfs_pair[0].value,
dump_config_dev(dev);
}
-static int add_perm_dev(struct perm_device *new_dev)
-{
- struct perm_device *dev;
- struct perm_device *tmp_dev;
-
- /* update the values if we already have the device */
- list_for_each_entry(dev, &perm_device_list, node) {
- if (strcmp(new_dev->name, dev->name) != 0)
- continue;
-
- set_empty_perms(dev, new_dev->mode, new_dev->owner, new_dev->group);
- return 0;
- }
-
- /* not found, add new structure to the perm list */
- tmp_dev = malloc(sizeof(*tmp_dev));
- if (!tmp_dev)
- return -ENOMEM;
-
- memcpy(tmp_dev, new_dev, sizeof(*tmp_dev));
- list_add_tail(&tmp_dev->node, &perm_device_list);
- //dump_perm_dev(tmp_dev);
- return 0;
-}
-
-void dump_perm_dev(struct perm_device *dev)
-{
- dbg_parse("name='%s', owner='%s', group='%s', mode=%#o",
- dev->name, dev->owner, dev->group, dev->mode);
-}
-
-void dump_perm_dev_list(void)
-{
- struct perm_device *dev;
-
- list_for_each_entry(dev, &perm_device_list, node)
- dump_perm_dev(dev);
-}
-
-/* extract possible KEY{attr} or KEY_attr */
+/* extract possible KEY{attr} */
static char *get_key_attribute(char *str)
{
char *pos;
return attr;
}
- attr = strchr(str, '_');
- if (attr != NULL) {
- attr++;
- dbg("attribute='%s'", attr);
- return attr;
- }
-
return NULL;
}
-static int namedev_parse_rules(char *filename)
+static int namedev_parse(const char *filename, void *data)
{
- char line[255];
+ char line[LINE_SIZE];
+ char *bufline;
int lineno;
char *temp;
char *temp2;
size_t cur;
size_t count;
int program_given = 0;
+ int valid;
int retval = 0;
struct config_device dev;
/* loop through the whole file */
cur = 0;
lineno = 0;
- while (1) {
- count = buf_get_line(buf, bufsize, cur);
-
- strncpy(line, buf + cur, count);
- line[count] = '\0';
- temp = line;
- lineno++;
+ while (cur < bufsize) {
+ unsigned int i, j;
+ count = buf_get_line(buf, bufsize, cur);
+ bufline = &buf[cur];
cur += count+1;
- if (cur > bufsize)
- break;
+ lineno++;
- dbg_parse("read '%s'", temp);
+ if (count >= LINE_SIZE) {
+ info("line too long, rule skipped %s, line %d", filename, lineno);
+ continue;
+ }
/* eat the whitespace */
- while (isspace(*temp))
- ++temp;
-
- /* empty line? */
- if ((*temp == '\0') || (*temp == '\n'))
+ while ((count > 0) && isspace(bufline[0])) {
+ bufline++;
+ count--;
+ }
+ if (count == 0)
continue;
/* see if this is a comment */
- if (*temp == COMMENT_CHARACTER)
+ if (bufline[0] == COMMENT_CHARACTER)
continue;
- memset(&dev, 0x00, sizeof(struct config_device));
+ /* skip backslash and newline from multi line rules */
+ for (i = j = 0; i < count; i++) {
+ if (bufline[i] == '\\' || bufline[i] == '\n')
+ continue;
+
+ line[j++] = bufline[i];
+ }
+ line[j] = '\0';
+ dbg_parse("read '%s'", line);
/* get all known keys */
+ memset(&dev, 0x00, sizeof(struct config_device));
+ temp = line;
+ valid = 0;
+
while (1) {
retval = parse_get_pair(&temp, &temp2, &temp3);
if (retval)
break;
+ if (strcasecmp(temp2, FIELD_KERNEL) == 0) {
+ strfieldcpy(dev.kernel, temp3);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(temp2, FIELD_SUBSYSTEM) == 0) {
+ strfieldcpy(dev.subsystem, temp3);
+ valid = 1;
+ continue;
+ }
+
if (strcasecmp(temp2, FIELD_BUS) == 0) {
strfieldcpy(dev.bus, temp3);
+ valid = 1;
continue;
}
if (strcasecmp(temp2, FIELD_ID) == 0) {
strfieldcpy(dev.id, temp3);
+ valid = 1;
continue;
}
if (strcasecmp(temp2, FIELD_PLACE) == 0) {
strfieldcpy(dev.place, temp3);
+ valid = 1;
continue;
}
}
strfieldcpy(pair->file, attr);
strfieldcpy(pair->value, temp3);
+ valid = 1;
}
continue;
}
- if (strcasecmp(temp2, FIELD_KERNEL) == 0) {
- strfieldcpy(dev.kernel, temp3);
+ if (strcasecmp(temp2, FIELD_DRIVER) == 0) {
+ strfieldcpy(dev.driver, temp3);
+ valid = 1;
continue;
}
if (strcasecmp(temp2, FIELD_PROGRAM) == 0) {
program_given = 1;
strfieldcpy(dev.program, temp3);
+ valid = 1;
continue;
}
if (strcasecmp(temp2, FIELD_RESULT) == 0) {
strfieldcpy(dev.result, temp3);
+ valid = 1;
continue;
}
if (strncasecmp(temp2, FIELD_NAME, sizeof(FIELD_NAME)-1) == 0) {
attr = get_key_attribute(temp2 + sizeof(FIELD_NAME)-1);
- if (attr != NULL)
- if (strcasecmp(attr, ATTR_PARTITIONS) == 0) {
+ /* FIXME: remove old style options and make OPTIONS= mandatory */
+ if (attr != NULL) {
+ if (strstr(attr, ATTR_PARTITIONS) != NULL) {
dbg_parse("creation of partition nodes requested");
- dev.partitions = PARTITIONS_COUNT;
+ dev.partitions = DEFAULT_PARTITIONS_COUNT;
}
+ if (strstr(attr, ATTR_IGNORE_REMOVE) != NULL) {
+ dbg_parse("remove event should be ignored");
+ dev.ignore_remove = 1;
+ }
+ }
strfieldcpy(dev.name, temp3);
+ valid = 1;
continue;
}
if (strcasecmp(temp2, FIELD_SYMLINK) == 0) {
strfieldcpy(dev.symlink, temp3);
+ valid = 1;
continue;
}
if (strcasecmp(temp2, FIELD_OWNER) == 0) {
strfieldcpy(dev.owner, temp3);
+ valid = 1;
continue;
}
if (strcasecmp(temp2, FIELD_GROUP) == 0) {
strfieldcpy(dev.group, temp3);
+ valid = 1;
continue;
}
if (strcasecmp(temp2, FIELD_MODE) == 0) {
dev.mode = strtol(temp3, NULL, 8);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(temp2, FIELD_OPTIONS) == 0) {
+ if (strstr(temp3, ATTR_IGNORE_DEVICE) != NULL) {
+ dbg_parse("device should be ignored");
+ dev.ignore_device = 1;
+ }
+ if (strstr(temp3, ATTR_IGNORE_REMOVE) != NULL) {
+ dbg_parse("remove event should be ignored");
+ dev.ignore_remove = 1;
+ }
+ if (strstr(temp3, ATTR_PARTITIONS) != NULL) {
+ dbg_parse("creation of partition nodes requested");
+ dev.partitions = DEFAULT_PARTITIONS_COUNT;
+ }
+ valid = 1;
continue;
}
goto error;
}
+ /* skip line if not any valid key was found */
+ if (!valid)
+ goto error;
+
/* simple plausibility checks for given keys */
if ((dev.sysfs_pair[0].file[0] == '\0') ^
(dev.sysfs_pair[0].value[0] == '\0')) {
- dbg("inconsistency in " FIELD_SYSFS " key");
+ info("inconsistency in " FIELD_SYSFS " key");
goto error;
}
if ((dev.result[0] != '\0') && (program_given == 0)) {
- dbg(FIELD_RESULT " is only useful when "
- FIELD_PROGRAM " is called in any rule before");
+ info(FIELD_RESULT " is only useful when "
+ FIELD_PROGRAM " is called in any rule before");
goto error;
}
dbg("add_config_dev returned with error %d", retval);
continue;
error:
- dbg("%s:%d:%d: parse error, rule skipped",
- filename, lineno, temp - line);
+ info("parse error %s, line %d:%d, rule skipped",
+ filename, lineno, temp - line);
}
}
return retval;
}
-static int namedev_parse_permissions(char *filename)
+int namedev_init(void)
{
- char line[255];
- char *temp;
- char *temp2;
- char *buf;
- size_t bufsize;
- size_t cur;
- size_t count;
- int retval = 0;
- struct perm_device dev;
+ struct stat stats;
+ int retval;
- if (file_map(filename, &buf, &bufsize) == 0) {
- dbg("reading '%s' as permissions file", filename);
- } else {
- dbg("can't open '%s' as permissions file", filename);
+ if (stat(udev_rules_filename, &stats) != 0)
return -1;
- }
-
- /* loop through the whole file */
- cur = 0;
- while (1) {
- count = buf_get_line(buf, bufsize, cur);
-
- strncpy(line, buf + cur, count);
- line[count] = '\0';
- temp = line;
-
- cur += count+1;
- if (cur > bufsize)
- break;
-
- dbg_parse("read '%s'", temp);
-
- /* eat the whitespace at the beginning of the line */
- while (isspace(*temp))
- ++temp;
-
- /* empty line? */
- if ((*temp == '\0') || (*temp == '\n'))
- continue;
-
- /* see if this is a comment */
- if (*temp == COMMENT_CHARACTER)
- continue;
-
- memset(&dev, 0x00, sizeof(dev));
-
- /* parse the line */
- temp2 = strsep(&temp, ":");
- if (!temp2) {
- dbg("cannot parse line '%s'", line);
- continue;
- }
- strfieldcpy(dev.name, temp2);
-
- temp2 = strsep(&temp, ":");
- if (!temp2) {
- dbg("cannot parse line '%s'", line);
- continue;
- }
- strfieldcpy(dev.owner, temp2);
-
- temp2 = strsep(&temp, ":");
- if (!temp2) {
- dbg("cannot parse line '%s'", line);
- continue;
- }
- strfieldcpy(dev.group, temp2);
-
- if (!temp) {
- dbg("cannot parse line '%s'", line);
- continue;
- }
- dev.mode = strtol(temp, NULL, 8);
-
- dbg_parse("name='%s', owner='%s', group='%s', mode=%#o",
- dev.name, dev.owner, dev.group, dev.mode);
- retval = add_perm_dev(&dev);
- if (retval) {
- dbg("add_perm_dev returned with error %d", retval);
- goto exit;
- }
- }
+ if ((stats.st_mode & S_IFMT) != S_IFDIR)
+ retval = namedev_parse(udev_rules_filename, NULL);
+ else
+ retval = call_foreach_file(namedev_parse, udev_rules_filename, RULEFILE_SUFFIX, NULL);
-exit:
- file_unmap(buf, bufsize);
return retval;
}
-struct files {
- struct list_head list;
- char name[NAME_SIZE];
-};
-
-/* sort files in lexical order */
-static int file_list_insert(char *filename)
-{
- struct files *loop_file;
- struct files *new_file;
-
- list_for_each_entry(loop_file, &file_list, list) {
- if (strcmp(loop_file->name, filename) > 0) {
- break;
- }
- }
-
- new_file = malloc(sizeof(struct files));
- if (new_file == NULL) {
- dbg("error malloc");
- return -ENOMEM;
- }
-
- strfieldcpy(new_file->name, filename);
- list_add_tail(&new_file->list, &loop_file->list);
- return 0;
-}
-
-/* calls function for file or every file found in directory */
-static int call_foreach_file(int parser (char *f) , char *filename, char *extension)
+void namedev_close(void)
{
- struct dirent *ent;
- DIR *dir;
- char *ext;
- char file[NAME_SIZE];
- struct stat stats;
- struct files *loop_file;
- struct files *tmp_file;
-
- /* look if we have a plain file or a directory to scan */
- stat(filename, &stats);
- if ((stats.st_mode & S_IFMT) != S_IFDIR)
- return parser(filename);
-
- /* sort matching filename into list */
- dbg("open config as directory '%s'", filename);
- dir = opendir(filename);
- while (1) {
- ent = readdir(dir);
- if (ent == NULL || ent->d_name[0] == '\0')
- break;
-
- dbg("found file '%s'", ent->d_name);
- ext = strrchr(ent->d_name, '.');
- if (ext == NULL)
- continue;
-
- if (strcmp(ext, extension) == 0) {
- dbg("put file in list '%s'", ent->d_name);
- file_list_insert(ent->d_name);
- }
- }
+ struct config_device *dev;
- /* parse every file in the list */
- list_for_each_entry_safe(loop_file, tmp_file, &file_list, list) {
- strfieldcpy(file, filename);
- strfieldcat(file, loop_file->name);
- parser(file);
- list_del(&loop_file->list);
- free(loop_file);
+ list_for_each_entry(dev, &config_device_list, node) {
+ list_del(&dev->node);
+ free(dev);
}
-
- closedir(dir);
- return 0;
-}
-
-int namedev_init_rules()
-{
- return call_foreach_file(namedev_parse_rules, udev_rules_filename, RULEFILE_EXT);
}
-int namedev_init_permissions()
-{
- return call_foreach_file(namedev_parse_permissions, udev_permissions_filename, PERMFILE_EXT);
-}
~ianmdlvl / elogind.git / blobdiff