1 /* opkg_utils.c - the opkg package management system
5 Copyright (C) 2002 Compaq Computer Corporation
7 This program is free software; you can redistribute it and/or
8 modify it under the terms of the GNU General Public License as
9 published by the Free Software Foundation; either version 2, or (at
10 your option) any later version.
12 This program is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 General Public License for more details.
19 #include <sys/statvfs.h>
21 #include "libbb/libbb.h"
22 #include "opkg_utils.h"
24 unsigned long get_available_kbytes(char *filesystem)
28 if (statvfs(filesystem, &f) == -1) {
29 opkg_perror(ERROR, "Failed to statvfs for %s", filesystem);
32 // Actually ((sfs.f_bavail * sfs.f_frsize) / 1024)
33 // and here we try to avoid overflow.
34 if (f.f_frsize >= 1024)
35 return (f.f_bavail * (f.f_frsize / 1024));
36 else if (f.f_frsize > 0)
37 return f.f_bavail / (1024 / f.f_frsize);
39 opkg_msg(ERROR, "Unknown block size for target filesystem.\n");
44 /* something to remove whitespace, a hash pooper */
45 char *trim_xstrdup(const char *src)
49 /* remove it from the front */
50 while (src && isspace(*src) && *src)
53 end = src + (strlen(src) - 1);
55 /* and now from the back */
56 while ((end > src) && isspace(*end))
61 /* xstrndup will NULL terminate for us */
62 return xstrndup(src, end - src);
65 int line_is_blank(const char *line)
69 for (s = line; *s; s++) {