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/*
* Copyright (c) 1997,2007 Andrew G. Morgan <morgan@kernel.org>
*
* This displays the capabilities of a given file.
*/
#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>
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 void do_recursive(const char *fname);
static void do_getcap(const char *fname)
{
cap_t cap_d;
char *result;
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);
}
goto out;
}
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;
}
printf("%s %s\n", fname, result);
cap_free(cap_d);
cap_free(result);
out:
if (recursive) {
struct stat stbuf;
if (stat(fname, &stbuf)) {
fprintf(stderr, "Failed to get attribute of file `%s' (%s)\n",
fname, strerror(errno));
} else if (S_ISDIR(stbuf.st_mode)) {
do_recursive(fname);
}
}
}
static void do_recursive(const char *fname)
{
DIR *dirp;
struct dirent *dent;
char buffer[PATH_MAX];
dirp = opendir(fname);
if (dirp == NULL) {
fprintf(stderr, "Failed to open directory `%s' (%s)\n",
fname, strerror(errno));
return;
}
while ((dent = readdir(dirp)) != NULL) {
if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
continue;
snprintf(buffer, PATH_MAX, "%s/%s", fname, dent->d_name);
do_getcap(buffer);
}
closedir(dirp);
}
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++)
do_getcap(argv[i]);
return 0;
}
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