X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=namedev_parse.c;h=679efae1b59b10e7153ef4f621c14df22f9251d8;hp=fba32a4983b12ed756cd577ace40aa5a60553ee2;hb=f27125f98f6487e881a957726da895aebd799f0d;hpb=e41016d3547ef704c0785ba197d36ef69de51260

diff --git a/namedev_parse.c b/namedev_parse.c
index fba32a498..679efae1b 100644
--- a/namedev_parse.c
+++ b/namedev_parse.c
@@ -30,19 +30,16 @@
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
-#include <fcntl.h>
 #include <ctype.h>
 #include <unistd.h>
 #include <sys/stat.h>
-#include <dirent.h>
 #include <errno.h>
 
 #include "udev.h"
+#include "udev_lib.h"
 #include "logging.h"
 #include "namedev.h"
 
-LIST_HEAD(file_list);
-
 
 static int add_config_dev(struct config_device *new_dev)
 {
@@ -65,7 +62,7 @@ void dump_config_dev(struct config_device *dev)
 		  "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->kernel, dev->program, dev->result,
 		  dev->owner, dev->group, dev->mode);
 }
 
@@ -153,27 +150,36 @@ static int namedev_parse_rules(char *filename)
 	char *temp2;
 	char *temp3;
 	char *attr;
-	FILE *fd;
+	char *buf;
+	size_t bufsize;
+	size_t cur;
+	size_t count;
 	int program_given = 0;
 	int retval = 0;
 	struct config_device dev;
 
-	fd = fopen(filename, "r");
-	if (fd != NULL) {
+	if (file_map(filename, &buf, &bufsize) == 0) {
 		dbg("reading '%s' as rules file", filename);
 	} else {
-		dbg("can't open '%s' as a rules file", 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;
+		count = buf_get_line(buf, bufsize, cur);
+
+		strncpy(line, buf + cur, count);
+		line[count] = '\0';
+		temp = line;
 		lineno++;
+
+		cur += count+1;
+		if (cur > bufsize)
+			break;
+
 		dbg_parse("read '%s'", temp);
 
 		/* eat the whitespace */
@@ -311,8 +317,8 @@ error:
 			    filename, lineno, temp - line);
 		}
 	}
-exit:
-	fclose(fd);
+
+	file_unmap(buf, bufsize);
 	return retval;
 }
 
@@ -321,22 +327,31 @@ static int namedev_parse_permissions(char *filename)
 	char line[255];
 	char *temp;
 	char *temp2;
-	FILE *fd;
+	char *buf;
+	size_t bufsize;
+	size_t cur;
+	size_t count;
 	int retval = 0;
 	struct perm_device dev;
 
-	fd = fopen(filename, "r");
-	if (fd != NULL) {
+	if (file_map(filename, &buf, &bufsize) == 0) {
 		dbg("reading '%s' as permissions file", filename);
 	} else {
 		dbg("can't open '%s' as permissions file", filename);
-		return -ENODEV;
+		return -1;
 	}
 
 	/* loop through the whole file */
+	cur = 0;
 	while (1) {
-		temp = fgets(line, sizeof(line), fd);
-		if (temp == NULL)
+		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);
@@ -394,92 +409,30 @@ static int namedev_parse_permissions(char *filename)
 	}
 
 exit:
-	fclose(fd);
+	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)
+int namedev_init_rules()
 {
-	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);
+	stat(udev_rules_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);
-		}
-	}
-
-	/* 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);
-	}
-
-	closedir(dir);
-	return 0;
-}
-
-int namedev_init_rules()
-{
-	return call_foreach_file(namedev_parse_rules, udev_rules_filename, RULEFILE_EXT);
+		return namedev_parse_rules(udev_rules_filename);
+	else
+		return call_foreach_file(namedev_parse_rules,
+					 udev_rules_filename, RULEFILE_SUFFIX);
 }
 
 int namedev_init_permissions()
 {
-	return call_foreach_file(namedev_parse_permissions, udev_permissions_filename, PERMFILE_EXT);
+	struct stat stats;
+
+	stat(udev_permissions_filename, &stats);
+	if ((stats.st_mode & S_IFMT) != S_IFDIR)
+		return namedev_parse_permissions(udev_permissions_filename);
+	else
+		return call_foreach_file(namedev_parse_permissions,
+					 udev_permissions_filename, PERMFILE_SUFFIX);
 }