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/* opkg_utils.c - the opkg package management system
Steven M. Ayer
Copyright (C) 2002 Compaq Computer Corporation
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2, or (at
your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
*/
#include <ctype.h>
#include <sys/statvfs.h>
#include "libbb/libbb.h"
#include "opkg_utils.h"
unsigned long get_available_kbytes(char *filesystem)
{
struct statvfs f;
if (statvfs(filesystem, &f) == -1) {
opkg_perror(ERROR, "Failed to statvfs for %s", filesystem);
return 0;
}
// Actually ((sfs.f_bavail * sfs.f_frsize) / 1024)
// and here we try to avoid overflow.
if (f.f_frsize >= 1024)
return (f.f_bavail * (f.f_frsize / 1024));
else if (f.f_frsize > 0)
return f.f_bavail / (1024 / f.f_frsize);
opkg_msg(ERROR, "Unknown block size for target filesystem.\n");
return 0;
}
/* something to remove whitespace, a hash pooper */
char *trim_xstrdup(const char *src)
{
const char *end;
/* remove it from the front */
while (src && isspace(*src) && *src)
src++;
end = src + (strlen(src) - 1);
/* and now from the back */
while ((end > src) && isspace(*end))
end--;
end++;
/* xstrndup will NULL terminate for us */
return xstrndup(src, end - src);
}
int line_is_blank(const char *line)
{
const char *s;
for (s = line; *s; s++) {
if (!isspace(*s))
return 0;
}
return 1;
}
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