70033702cd
After getting a number of different crashes for udev reading broken udev.config files, I decided to try to make the parser a little more robust. The behaviour is changed to stop reading the configuration file and logging the broken entry instead of silently ignoring it (is that good? It's easy to just print and continue). All strcpy()'s to a fixed length string are now implicitly limited to the bounds of the target string. I kept the -ENODEV return code for now, not sure if there should be different ones.
93 lines
2.4 KiB
C
93 lines
2.4 KiB
C
/*
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* udev.h
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*
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* Userspace devfs
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*
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* Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#ifndef UDEV_H
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#define UDEV_H
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#include "libsysfs/libsysfs.h"
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#include <limits.h>
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#ifdef DEBUG
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#include <syslog.h>
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#define dbg(format, arg...) \
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do { \
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log_message (LOG_DEBUG , "%s: " format , __FUNCTION__ , ## arg); \
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} while (0)
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#else
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#define dbg(format, arg...) do { } while (0)
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#endif
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/* Parser needs it's own debugging statement, we usually don't care about this at all */
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#ifdef DEBUG_PARSER
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#define dbg_parse(format, arg...) \
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do { \
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log_message (LOG_DEBUG , "%s: " format , __FUNCTION__ , ## arg); \
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} while (0)
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#else
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#define dbg_parse(format, arg...) do { } while (0)
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#endif
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extern int log_message (int level, const char *format, ...)
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__attribute__ ((format (printf, 2, 3)));
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/* filenames for the config and database files */
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#define UDEV_DB "udev.tdb"
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#define UDEV_CONFIG_PERMISSION_FILE "udev.permissions"
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#define UDEV_CONFIG_FILE "udev.config"
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#define NAME_SIZE 100
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#define OWNER_SIZE 30
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#define GROUP_SIZE 30
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struct udevice {
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char name[NAME_SIZE];
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char owner[OWNER_SIZE];
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char group[GROUP_SIZE];
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char type;
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int major;
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int minor;
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mode_t mode;
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};
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#define strfieldcpy(to, from) \
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do { \
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to[sizeof(to)-1] = '\0'; \
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strncpy(to, from, sizeof(to)-1); \
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} while (0)
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extern int udev_add_device(char *path, char *subsystem);
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extern int udev_remove_device(char *path, char *subsystem);
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extern char **main_argv;
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extern char **main_envp;
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extern char sysfs_path[SYSFS_PATH_MAX];
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extern char *udev_config_dir;
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extern char *udev_root;
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extern char udev_db_filename[PATH_MAX+NAME_MAX];
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extern char udev_config_permission_filename[PATH_MAX+NAME_MAX];
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extern char udev_config_filename[PATH_MAX+NAME_MAX];
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#endif
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