#include <fcntl.h>
#include <sys/types.h>
+#include "udev.h"
#include "klibc_fixups.h"
+#include "udev_lib.h"
#include "logging.h"
#define PW_FILE "/etc/passwd"
#define GR_FILE "/etc/group"
#define UTMP_FILE "/var/run/utmp"
-
/* return the id of a passwd style line, selected by the users name */
static unsigned long get_id_by_name(const char *uname, const char *dbfile)
{
unsigned long id = -1;
- FILE *file;
- char buf[255];
+ char line[LINE_SIZE];
+ char *buf;
+ char *bufline;
+ size_t bufsize;
+ size_t cur;
+ size_t count;
char *pos;
char *name;
char *idstr;
char *tail;
- file = fopen(dbfile, "r");
- if (file == NULL) {
- dbg("unable to open file '%s'", dbfile);
+ if (file_map(dbfile, &buf, &bufsize) == 0) {
+ dbg("reading '%s' as db file", dbfile);
+ } else {
+ dbg("can't open '%s' as db file", dbfile);
return -1;
}
- while (1) {
- pos = fgets(buf, sizeof(buf), file);
- if (pos == NULL)
- break;
+ /* loop through the whole file */
+ cur = 0;
+ while (cur < bufsize) {
+ count = buf_get_line(buf, bufsize, cur);
+ bufline = &buf[cur];
+ cur += count+1;
+
+ if (count >= LINE_SIZE)
+ continue;
+
+ strncpy(line, bufline, count);
+ line[count] = '\0';
+ pos = line;
/* get name */
name = strsep(&pos, ":");
if (strcmp(uname, name) == 0) {
id = strtoul(idstr, &tail, 10);
- if (tail == NULL)
+ if (tail[0] != '\0')
id = -1;
else
dbg("id for '%s' is '%li'", name, id);
}
}
- fclose(file);
+ file_unmap(buf, bufsize);
return id;
}