1/*
2 * zfopen.c
3 */
4
5#include <stdio.h>
6#include <unistd.h>
7#include <fcntl.h>
8#include <syslinux/zio.h>
9
10FILE *zfopen(const char *file, const char *mode)
11{
12    int flags = O_RDONLY;
13    int plus = 0;
14    int fd;
15
16    while (*mode) {
17	switch (*mode) {
18	case 'r':
19	    flags = O_RDONLY;
20	    break;
21	case 'w':
22	    flags = O_WRONLY | O_CREAT | O_TRUNC;
23	    break;
24	case 'a':
25	    flags = O_WRONLY | O_CREAT | O_APPEND;
26	    break;
27	case '+':
28	    plus = 1;
29	    break;
30	}
31	mode++;
32    }
33
34    if (plus) {
35	flags = (flags & ~(O_RDONLY | O_WRONLY)) | O_RDWR;
36    }
37
38    fd = zopen(file, flags, 0666);
39
40    if (fd < 0)
41	return NULL;
42    else
43	return fdopen(fd, mode);
44}
45