Attachment 232751 Details for Bug 334931 – sample request-key callout program

sample request-key callout program

cifskey.c (text/plain), 1.43 KB, created by Jeff Layton on 2007-10-19 16:46:27 UTC

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Creator: Jeff Layton

Created: 2007-10-19 16:46:27 UTC

Size: 1.43 KB

patch

obsolete

>#include <sys/types.h>
>#include <keyutils.h>
>#include <string.h>
>#include <stdlib.h>
>#include <stdarg.h>
>#include <stdio.h>
>#include <syslog.h>
>#include <errno.h>
>
>struct cifs_spnego_msg {
>	uint32_t 	len;
>	uint8_t		data[1];
>};
>
>static void
>error(const char *fmt, ...)
>{
>	va_list va;
>
>	va_start(va, fmt);
>	vsyslog(LOG_ERR, fmt, va);
>	va_end(va);
>
>	exit(1);
>}
>
>int
>main(int argc, char **argv)
>{
>	long clen, ret;
>	key_serial_t key;
>	struct cifs_spnego_msg *rep;
>
>	if (argc < 2)
>		error("usage: %s <key_id>\n", argv[0]);
>
>	/* pass the key SN to instantiate on command line */
>	key = atoi(argv[1]);
>
>	/* we have to assume authority over auth_key to get callout_data */
>        ret = keyctl_assume_authority(key);
>        if (ret < 0 && !(argc == 9 || errno == EOPNOTSUPP))
>                error("Failed to assume authority over key %d (%m)\n", key);
>
>	/* get the length of callout_data */
>	clen = keyctl_read(KEY_SPEC_REQKEY_AUTH_KEY, NULL, 0);
>	if (clen < 0)
>		error("Failed to retrieve callout info length %d\n", clen);
>
>	/* allocate memory for response struct */
>	rep = malloc(clen + 4);
>	if (rep == NULL)
>		error("can't allocate reply buffer");
>
>	/* set len field in reply and read the data into data field */
>	rep->len = clen;
>	ret = keyctl_read(KEY_SPEC_REQKEY_AUTH_KEY, (char *)rep->data, clen);
>
>	/* instantiate the key */
>	ret = keyctl_instantiate(key, rep, (rep->len+4), 0);
>	if (ret < 0)
>		error("keyctl_instantiate failed: %d", errno);
>
>	free(rep);
>	return 0;
>}

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Attachments on bug 334931: 229111 | 232751