1 files changed, 108 insertions, 0 deletions
diff --git a/progs/getcap.c b/progs/getcap.c
new file mode 100644
index 0000000..f6debc0
--- /dev/null
+++ b/progs/getcap.c
@@ -0,0 +1,108 @@
+/*
+ * 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;
+}