[PATCH] udev - safer string handling - part four

[elogind.git] / udev.h

diff --git a/udev.h b/udev.h
index 33cb89af5542ef6684971cc6e90c0514325e85b1..3b676acf40d99ab1a7a137dbbe49804b80f6ecde 100644 (file)
--- a/udev.h
+++ b/udev.h
@@ -23,49 +23,124 @@
 #ifndef UDEV_H
 #define UDEV_H
 
+#include <stdlib.h>
+#include <string.h>
+#include <sysfs/libsysfs.h>
+#include <stddef.h>
+#include <sys/param.h>
 
-#ifdef DEBUG
-#include <syslog.h>
-#define dbg(format, arg...)                                                            \
-       do {                                                                            \
-               log_message (LOG_DEBUG , "%s: " format , __FUNCTION__ , ## arg);        \
-       } while (0)
-#else
-       #define dbg(format, arg...) do { } while (0)
-#endif
-
-/* Parser needs it's own debugging statement, we usually don't care about this at all */
-#ifdef DEBUG_PARSER
-#define dbg_parse(format, arg...)                                                      \
-       do {                                                                            \
-               log_message (LOG_DEBUG , "%s: " format , __FUNCTION__ , ## arg);        \
-       } while (0)
-#else
-       #define dbg_parse(format, arg...) do { } while (0)
-#endif
-
-
-extern int log_message (int level, const char *format, ...)
-       __attribute__ ((format (printf, 2, 3)));
-
-
-/* Lots of constants that should be in a config file sometime */
+#define COMMENT_CHARACTER              '#'
 
 #define NAME_SIZE      100
 #define OWNER_SIZE     30
 #define GROUP_SIZE     30
+#define MODE_SIZE      8
 
-struct device_attr {
+#define ACTION_SIZE    30
+#define DEVPATH_SIZE   255
+#define SUBSYSTEM_SIZE 30
+
+/* length of public data */
+#define UDEVICE_LEN (offsetof(struct udevice, bus_id))
+
+struct udevice {
        char name[NAME_SIZE];
        char owner[OWNER_SIZE];
        char group[GROUP_SIZE];
-       int mode;
+       char type;
+       int major;
+       int minor;
+       unsigned int mode;      /* not mode_t due to conflicting definitions in different libcs */
+       char symlink[NAME_SIZE];
+       int partitions;
+
+       /* private data that help us in building strings */
+       char bus_id[SYSFS_NAME_LEN];
+       char program_result[NAME_SIZE];
+       char kernel_number[NAME_SIZE];
+       char kernel_name[NAME_SIZE];
 };
 
-extern int udev_add_device(char *device, char *subsystem);
-extern int udev_remove_device(char *device, char *subsystem);
+#define strfieldcpy(to, from) \
+do { \
+       to[sizeof(to)-1] = '\0'; \
+       strncpy(to, from, sizeof(to)-1); \
+} while (0)
+
+#define strfieldcat(to, from) \
+do { \
+       to[sizeof(to)-1] = '\0'; \
+       strncat(to, from, sizeof(to) - strlen(to)-1); \
+} while (0)
+
+#define strnfieldcpy(to, from, maxsize) \
+do { \
+       to[maxsize-1] = '\0'; \
+       strncpy(to, from, maxsize-1); \
+} while (0)
+
+#define strnfieldcat(to, from, maxsize) \
+do { \
+       to[maxsize-1] = '\0'; \
+       strncat(to, from, maxsize - strlen(to)-1); \
+} while (0)
+
+static inline char *get_action(void)
+{
+       char *action;
+
+       action = getenv("ACTION");
+       if (action != NULL && strlen(action) > ACTION_SIZE)
+               action[ACTION_SIZE-1] = '\0';
+
+       return action;
+}
+
+static inline char *get_devpath(void)
+{
+       char *devpath;
+
+       devpath = getenv("DEVPATH");
+       if (devpath != NULL && strlen(devpath) > DEVPATH_SIZE)
+               devpath[DEVPATH_SIZE-1] = '\0';
+
+       return devpath;
+}
+
+static inline char *get_seqnum(void)
+{
+       char *seqnum;
+
+       seqnum = getenv("SEQNUM");
+
+       return seqnum;
+}
+
+static inline char *get_subsystem(char *subsystem)
+{
+       if (subsystem != NULL && strlen(subsystem) > SUBSYSTEM_SIZE)
+               subsystem[SUBSYSTEM_SIZE-1] = '\0';
+
+       return subsystem;
+}
+
+extern int udev_add_device(char *path, char *subsystem, int fake);
+extern int udev_remove_device(char *path, char *subsystem);
+extern void udev_init_config(void);
+extern int parse_get_pair(char **orig_string, char **left, char **right);
 
 extern char **main_argv;
 extern char **main_envp;
-#endif
+extern char sysfs_path[SYSFS_PATH_MAX];
+extern char udev_root[PATH_MAX];
+extern char udev_db_filename[PATH_MAX+NAME_MAX];
+extern char udev_permissions_filename[PATH_MAX+NAME_MAX];
+extern char udev_config_filename[PATH_MAX+NAME_MAX];
+extern char udev_rules_filename[PATH_MAX+NAME_MAX];
+extern char default_mode_str[MODE_SIZE];
+extern char default_owner_str[OWNER_SIZE];
+extern char default_group_str[GROUP_SIZE];
+extern int udev_log;
+extern int udev_sleep;
 
+#endif