*
* Userspace devfs
*
- * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
+ * Copyright (C) 2003,2004 Greg Kroah-Hartman <greg@kroah.com>
*
*
* This program is free software; you can redistribute it and/or modify it
*
*/
-/* define this to enable parsing debugging */
+#ifdef DEBUG
+/* define this to enable parsing debugging also */
/* #define DEBUG_PARSER */
+#endif
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
-#include <fcntl.h>
#include <ctype.h>
#include <unistd.h>
+#include <sys/stat.h>
#include <errno.h>
#include "udev.h"
+#include "udev_utils.h"
+#include "logging.h"
#include "namedev.h"
+
static int add_config_dev(struct config_device *new_dev)
{
struct config_device *tmp_dev;
return 0;
}
-int get_pair(char **orig_string, char **left, char **right)
-{
- char *temp;
- char *string = *orig_string;
-
- if (!string)
- return -ENODEV;
-
- /* eat any whitespace */
- while (isspace(*string) || *string == ',')
- ++string;
-
- /* split based on '=' */
- temp = strsep(&string, "=");
- *left = temp;
- if (!string)
- return -ENODEV;
-
- /* take the right side and strip off the '"' */
- while (isspace(*string))
- ++string;
- if (*string == '"')
- ++string;
- else
- return -ENODEV;
-
- temp = strsep(&string, "\"");
- if (!string || *temp == '\0')
- return -ENODEV;
- *right = temp;
- *orig_string = string;
-
- return 0;
-}
-
void dump_config_dev(struct config_device *dev)
{
- switch (dev->type) {
- case KERNEL_NAME:
- dbg_parse("KERNEL name='%s'", dev->name);
- break;
- case LABEL:
- dbg_parse("LABEL name='%s', bus='%s', sysfs_file[0]='%s', sysfs_value[0]='%s'",
- dev->name, dev->bus, dev->sysfs_pair[0].file, dev->sysfs_pair[0].value);
- break;
- case NUMBER:
- dbg_parse("NUMBER name='%s', bus='%s', id='%s'",
- dev->name, dev->bus, dev->id);
- break;
- case TOPOLOGY:
- dbg_parse("TOPOLOGY name='%s', bus='%s', place='%s'",
- dev->name, dev->bus, dev->place);
- break;
- case REPLACE:
- dbg_parse("REPLACE name=%s, kernel_name=%s",
- dev->name, dev->kernel_name);
- break;
- case CALLOUT:
- dbg_parse("CALLOUT name='%s', bus='%s', program='%s', id='%s'",
- dev->name, dev->bus, dev->exec_program, dev->id);
- break;
- default:
- dbg_parse("unknown type of method");
- }
+ 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'"
+ "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,
+ dev->kernel, dev->program, dev->result,
+ dev->owner, dev->group, dev->mode);
}
void dump_config_dev_list(void)
{
- struct list_head *tmp;
+ struct config_device *dev;
- list_for_each(tmp, &config_device_list) {
- struct config_device *dev = list_entry(tmp, struct config_device, node);
+ list_for_each_entry(dev, &config_device_list, node)
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)
void dump_perm_dev_list(void)
{
- struct list_head *tmp;
+ struct perm_device *dev;
- list_for_each(tmp, &perm_device_list) {
- struct perm_device *dev = list_entry(tmp, struct perm_device, node);
+ list_for_each_entry(dev, &perm_device_list, node)
dump_perm_dev(dev);
- }
}
+/* extract possible KEY{attr} */
+static char *get_key_attribute(char *str)
+{
+ char *pos;
+ char *attr;
+
+ attr = strchr(str, '{');
+ if (attr != NULL) {
+ attr++;
+ pos = strchr(attr, '}');
+ if (pos == NULL) {
+ dbg("missing closing brace for format");
+ return NULL;
+ }
+ pos[0] = '\0';
+ dbg("attribute='%s'", attr);
+ return attr;
+ }
-int namedev_init_rules(void)
+ return NULL;
+}
+
+static int namedev_parse_rules(const char *filename, void *data)
{
- char line[255];
+ char line[LINE_SIZE];
+ char *bufline;
int lineno;
char *temp;
char *temp2;
char *temp3;
- FILE *fd;
+ char *attr;
+ char *buf;
+ size_t bufsize;
+ size_t cur;
+ size_t count;
+ int program_given = 0;
+ int valid;
int retval = 0;
struct config_device dev;
- fd = fopen(udev_rules_filename, "r");
- if (fd != NULL) {
- dbg("reading '%s' as rules file", udev_rules_filename);
+ if (file_map(filename, &buf, &bufsize) == 0) {
+ dbg("reading '%s' as rules file", filename);
} else {
- dbg("can't open '%s' as a rules file", udev_rules_filename);
- return -ENODEV;
+ dbg("can't open '%s' as rules file", filename);
+ return -1;
}
/* loop through the whole file */
+ cur = 0;
lineno = 0;
- while (1) {
- /* get a line */
- temp = fgets(line, sizeof(line), fd);
- if (temp == NULL)
- goto exit;
+ while (cur < bufsize) {
+ count = buf_get_line(buf, bufsize, cur);
+ bufline = &buf[cur];
+ cur += count+1;
lineno++;
- dbg_parse("read '%s'", temp);
-
- /* eat the whitespace */
- while (isspace(*temp))
- ++temp;
- /* empty line? */
- if ((*temp == 0x00) || (*temp == 0x0a))
- continue;
-
- /* see if this is a comment */
- if (*temp == COMMENT_CHARACTER)
+ if (count >= LINE_SIZE) {
+ info("line too long, rule skipped %s, line %d",
+ filename, lineno);
continue;
-
- memset(&dev, 0x00, sizeof(struct config_device));
-
- /* get the method */
- temp2 = strsep(&temp, ",");
-
- if (strcasecmp(temp2, TYPE_LABEL) == 0) {
- dev.type = LABEL;
- goto keys;
- }
-
- if (strcasecmp(temp2, TYPE_NUMBER) == 0) {
- dev.type = NUMBER;
- goto keys;
}
- if (strcasecmp(temp2, TYPE_TOPOLOGY) == 0) {
- dev.type = TOPOLOGY;
- goto keys;
+ /* eat the whitespace */
+ while ((count > 0) && isspace(bufline[0])) {
+ bufline++;
+ count--;
}
+ if (count == 0)
+ continue;
- if (strcasecmp(temp2, TYPE_REPLACE) == 0) {
- dev.type = REPLACE;
- goto keys;
- }
+ /* see if this is a comment */
+ if (bufline[0] == COMMENT_CHARACTER)
+ continue;
- if (strcasecmp(temp2, TYPE_CALLOUT) == 0) {
- dev.type = CALLOUT;
- goto keys;
- }
+ strncpy(line, bufline, count);
+ line[count] = '\0';
+ dbg_parse("read '%s'", line);
- dbg_parse("unknown type of method '%s'", temp2);
- goto error;
-keys:
/* get all known keys */
+ memset(&dev, 0x00, sizeof(struct config_device));
+ temp = line;
+ valid = 0;
+
while (1) {
- retval = get_pair(&temp, &temp2, &temp3);
+ retval = parse_get_pair(&temp, &temp2, &temp3);
if (retval)
break;
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;
}
++pair;
}
if (pair) {
- /* remove prepended 'SYSFS_' */
- strfieldcpy(pair->file, temp2 + sizeof(FIELD_SYSFS)-1);
+ attr = get_key_attribute(temp2 + sizeof(FIELD_SYSFS)-1);
+ if (attr == NULL) {
+ dbg("error parsing " FIELD_SYSFS " attribute");
+ continue;
+ }
+ strfieldcpy(pair->file, attr);
strfieldcpy(pair->value, temp3);
+ valid = 1;
}
continue;
}
if (strcasecmp(temp2, FIELD_KERNEL) == 0) {
- strfieldcpy(dev.kernel_name, temp3);
+ strfieldcpy(dev.kernel, temp3);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(temp2, FIELD_SUBSYSTEM) == 0) {
+ strfieldcpy(dev.subsystem, temp3);
+ valid = 1;
+ continue;
+ }
+
+ if (strcasecmp(temp2, FIELD_DRIVER) == 0) {
+ strfieldcpy(dev.driver, temp3);
+ valid = 1;
continue;
}
if (strcasecmp(temp2, FIELD_PROGRAM) == 0) {
- strfieldcpy(dev.exec_program, temp3);
+ program_given = 1;
+ strfieldcpy(dev.program, temp3);
+ valid = 1;
continue;
}
- if (strcasecmp(temp2, FIELD_NAME) == 0) {
+ 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 (strstr(attr, ATTR_PARTITIONS) != NULL) {
+ dbg_parse("creation of partition nodes requested");
+ dev.partitions = 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;
}
- dbg_parse("unknown type of field '%s'", temp2);
+ if (strcasecmp(temp2, FIELD_MODE) == 0) {
+ dev.mode = strtol(temp3, NULL, 8);
+ valid = 1;
+ continue;
+ }
+
+ dbg("unknown type of field '%s'", temp2);
+ goto error;
}
- /* check presence of keys according to method type */
- switch (dev.type) {
- case LABEL:
- dbg_parse(TYPE_LABEL " name='%s', bus='%s', "
- "sysfs_file[0]='%s', sysfs_value[0]='%s', symlink='%s'",
- dev.name, dev.bus, dev.sysfs_pair[0].file,
- dev.sysfs_pair[0].value, dev.symlink);
- if ((*dev.name == '\0') ||
- (*dev.sysfs_pair[0].file == '\0') ||
- (*dev.sysfs_pair[0].value == '\0'))
- goto error;
- break;
- case NUMBER:
- dbg_parse(TYPE_NUMBER "name='%s', bus='%s', id='%s', symlink='%s'",
- dev.name, dev.bus, dev.id, dev.symlink);
- if ((*dev.name == '\0') ||
- (*dev.bus == '\0') ||
- (*dev.id == '\0'))
- goto error;
- break;
- case TOPOLOGY:
- dbg_parse(TYPE_TOPOLOGY "name='%s', bus='%s', "
- "place='%s', symlink='%s'",
- dev.name, dev.bus, dev.place, dev.symlink);
- if ((*dev.name == '\0') ||
- (*dev.bus == '\0') ||
- (*dev.place == '\0'))
- goto error;
- break;
- case REPLACE:
- dbg_parse(TYPE_REPLACE "name='%s', kernel_name='%s', symlink='%s'",
- dev.name, dev.kernel_name, dev.symlink);
- if ((*dev.name == '\0') ||
- (*dev.kernel_name == '\0'))
- goto error;
- break;
- case CALLOUT:
- dbg_parse(TYPE_CALLOUT "name='%s', bus='%s', program='%s', "
- "id='%s', symlink='%s'",
- dev.name, dev.bus, dev.exec_program,
- dev.id, dev.symlink);
- if ((*dev.name == '\0') ||
- (*dev.id == '\0') ||
- (*dev.exec_program == '\0'))
- goto error;
- break;
- default:
- dbg_parse("unknown type of method");
+ /* 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')) {
+ info("inconsistency in " FIELD_SYSFS " key");
+ goto error;
+ }
+
+ if ((dev.result[0] != '\0') && (program_given == 0)) {
+ info(FIELD_RESULT " is only useful when "
+ FIELD_PROGRAM " is called in any rule before");
goto error;
}
+ dev.config_line = lineno;
+ strfieldcpy(dev.config_file, filename);
retval = add_config_dev(&dev);
if (retval) {
dbg("add_config_dev returned with error %d", retval);
continue;
+error:
+ info("parse error %s, line %d:%d, rule skipped",
+ filename, lineno, temp - line);
}
}
-error:
- dbg_parse("%s:%d:%Zd: field missing or parse error", udev_rules_filename,
- lineno, temp - line);
-exit:
- fclose(fd);
+
+ file_unmap(buf, bufsize);
return retval;
}
-int namedev_init_permissions(void)
+static int namedev_parse_permissions(const char *filename, void *data)
{
- char line[255];
+ char line[LINE_SIZE];
+ char *bufline;
char *temp;
char *temp2;
- FILE *fd;
+ char *buf;
+ size_t bufsize;
+ size_t cur;
+ size_t count;
int retval = 0;
struct perm_device dev;
+ int lineno;
- fd = fopen(udev_permissions_filename, "r");
- if (fd != NULL) {
- dbg("reading '%s' as permissions file", udev_permissions_filename);
+ if (file_map(filename, &buf, &bufsize) == 0) {
+ dbg("reading '%s' as permissions file", filename);
} else {
- dbg("can't open '%s' as permissions file", udev_permissions_filename);
- return -ENODEV;
+ dbg("can't open '%s' as permissions file", filename);
+ return -1;
}
/* loop through the whole file */
- while (1) {
- temp = fgets(line, sizeof(line), fd);
- if (temp == NULL)
- break;
-
- dbg_parse("read '%s'", temp);
+ cur = 0;
+ lineno = 0;
+ while (cur < bufsize) {
+ count = buf_get_line(buf, bufsize, cur);
+ bufline = &buf[cur];
+ cur += count+1;
+ lineno++;
- /* eat the whitespace at the beginning of the line */
- while (isspace(*temp))
- ++temp;
+ if (count >= LINE_SIZE) {
+ info("line too long, rule skipped %s, line %d",
+ filename, lineno);
+ continue;
+ }
- /* empty line? */
- if ((*temp == 0x00) || (*temp == 0x0a))
+ /* eat the whitespace */
+ 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(dev));
+ strncpy(line, bufline, count);
+ line[count] = '\0';
+ dbg_parse("read '%s'", line);
/* parse the line */
+ memset(&dev, 0x00, sizeof(struct perm_device));
+ temp = line;
+
temp2 = strsep(&temp, ":");
if (!temp2) {
dbg("cannot parse line '%s'", line);
continue;
}
- strncpy(dev.name, temp2, sizeof(dev.name));
+ strfieldcpy(dev.name, temp2);
temp2 = strsep(&temp, ":");
if (!temp2) {
dbg("cannot parse line '%s'", line);
continue;
}
- strncpy(dev.owner, temp2, sizeof(dev.owner));
+ strfieldcpy(dev.owner, temp2);
temp2 = strsep(&temp, ":");
if (!temp2) {
dbg("cannot parse line '%s'", line);
continue;
}
- strncpy(dev.group, temp2, sizeof(dev.owner));
+ strfieldcpy(dev.group, temp2);
if (!temp) {
- dbg("cannot parse line: %s", line);
+ 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);
+ dev.name, dev.owner, dev.group, dev.mode);
+
retval = add_perm_dev(&dev);
if (retval) {
dbg("add_perm_dev returned with error %d", retval);
}
exit:
- fclose(fd);
+ file_unmap(buf, bufsize);
return retval;
-}
+}
+
+int namedev_init_rules(void)
+{
+ struct stat stats;
+
+ stat(udev_rules_filename, &stats);
+ if ((stats.st_mode & S_IFMT) != S_IFDIR)
+ return namedev_parse_rules(udev_rules_filename, NULL);
+ else
+ return call_foreach_file(namedev_parse_rules, udev_rules_filename,
+ RULEFILE_SUFFIX, NULL);
+}
+int namedev_init_permissions(void)
+{
+ struct stat stats;
+ stat(udev_permissions_filename, &stats);
+ if ((stats.st_mode & S_IFMT) != S_IFDIR)
+ return namedev_parse_permissions(udev_permissions_filename, NULL);
+ else
+ return call_foreach_file(namedev_parse_permissions, udev_permissions_filename,
+ PERMFILE_SUFFIX, NULL);
+}
~ianmdlvl / elogind.git / blobdiff