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/*
* Copyright (c) 1997,2007 Andrew G. Morgan <morgan@kernel.org>
*
* This displays the capabilities of a given file.
*/
#define _XOPEN_SOURCE 500
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <dirent.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/capability.h>
#include <ftw.h>
static int verbose = 0;
static int recursive = 0;
static void usage(void)
{
fprintf(stderr,
"usage: getcap [-v] [-r] [-h] <filename> [<filename> ...]\n"
"\n"
"\tdisplays the capabilities on the queried file(s).\n"
);
exit(1);
}
static int do_getcap(const char *fname, const struct stat *stbuf,
int tflag, struct FTW* ftwbuf)
{
cap_t cap_d;
char *result;
if (tflag != FTW_F) {
if (verbose) {
printf("%s (Not a regular file)\n", fname);
}
return 0;
}
cap_d = cap_get_file(fname);
if (cap_d == NULL) {
if (errno != ENODATA) {
fprintf(stderr, "Failed to get capabilities of file `%s' (%s)\n",
fname, strerror(errno));
} else if (verbose) {
printf("%s\n", fname);
}
return 0;
}
result = cap_to_text(cap_d, NULL);
if (!result) {
fprintf(stderr,
"Failed to get capabilities of human readable format at `%s' (%s)\n",
fname, strerror(errno));
cap_free(cap_d);
return 0;
}
printf("%s %s\n", fname, result);
cap_free(cap_d);
cap_free(result);
return 0;
}
int main(int argc, char **argv)
{
int i, c;
while ((c = getopt(argc, argv, "rvh")) > 0) {
switch(c) {
case 'r':
recursive = 1;
break;
case 'v':
verbose = 1;
break;
default:
usage();
}
}
if (!argv[optind])
usage();
for (i=optind; argv[i] != NULL; i++) {
struct stat stbuf;
if (lstat(argv[i], &stbuf) != 0) {
fprintf(stderr, "%s (%s)\n", argv[i], strerror(errno));
} else if (recursive) {
nftw(argv[i], do_getcap, 20, FTW_PHYS);
} else {
int tflag = S_ISREG(stbuf.st_mode) ? FTW_F :
(S_ISLNK(stbuf.st_mode) ? FTW_SL : FTW_NS);
do_getcap(argv[i], &stbuf, tflag, 0);
}
}
return 0;
}
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