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comparison tests/read_file.c @ 0:6ce4443e7545

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Add the draft of an API to collect statistics on LXC
author Louis Opter <kalessin@kalessin.fr>
date Wed, 29 Dec 2010 23:28:14 +0100
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-1:000000000000 0:6ce4443e7545
1 #include <sys/types.h>
2
3 #include <err.h>
4 #include <fcntl.h>
5 #include <stdlib.h>
6 #include <string.h>
7 #include <unistd.h>
8
9 #include "lxcstats.h"
10 #include "_lxcstats.h"
11
12 int
13 main(void)
14 {
15 char reference[1024];
16 int rdsize;
17 char *trial;
18 size_t size;
19 int fd;
20
21 fd = open("/etc/hostname", O_RDONLY);
22 if (fd == -1)
23 err(EXIT_FAILURE, "can't open /etc/hostname");
24
25 size = _lxcst_read_file("/etc/hostname", &trial);
26 if (!trial)
27 err(EXIT_FAILURE, "can't read /etc/hostname");
28
29 rdsize = read(fd, reference, sizeof(reference));
30 if (rdsize == -1)
31 err(EXIT_FAILURE, "can't read /etc/hostname");
32
33 if ((size_t)rdsize != size)
34 errx(EXIT_FAILURE, "sizes are different");
35
36 if (memcmp(reference, trial, size))
37 errx(EXIT_FAILURE, "buffers are different");
38
39 free(trial);
40
41 return (EXIT_SUCCESS);
42 }