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author | Jeremy Kerr <jk@ozlabs.org> | 2013-12-16 11:12:03 +0800 |
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committer | Jeremy Kerr <jk@ozlabs.org> | 2013-12-18 09:52:42 +0800 |
commit | 072847109936bc0e822f8cf67c31eb62183f0db8 (patch) | |
tree | 168ebf7666c721c912d2b3a5c004d27480d47fc6 /lib/util | |
parent | b955fa07fc256b39caedb311f97fed404a63c8d5 (diff) | |
download | petitboot-072847109936bc0e822f8cf67c31eb62183f0db8.zip petitboot-072847109936bc0e822f8cf67c31eb62183f0db8.tar.gz |
lib/util: Move mac_buf from nc code to util library
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Diffstat (limited to 'lib/util')
-rw-r--r-- | lib/util/util.c | 46 | ||||
-rw-r--r-- | lib/util/util.h | 4 |
2 files changed, 50 insertions, 0 deletions
diff --git a/lib/util/util.c b/lib/util/util.c new file mode 100644 index 0000000..75b1c23 --- /dev/null +++ b/lib/util/util.c @@ -0,0 +1,46 @@ +/* + * Copyright (C) 2013 IBM 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; version 2 of the License. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <stdio.h> +#include <string.h> +#include <assert.h> + +#include <util/util.h> + +void mac_str(uint8_t *mac, unsigned int maclen, char *buf, unsigned int buflen) +{ + unsigned int i; + char *pos; + + assert(buflen > sizeof("unknown")); + + if (!maclen || maclen * 3 + 1 > buflen) { + strcpy(buf, "unknown"); + return; + } + + pos = buf; + + for (i = 0; i < maclen; i++) { + snprintf(pos, 4, "%02x:", mac[i]); + pos += 3; + } + + *(pos - 1) = '\0'; + + return; +} diff --git a/lib/util/util.h b/lib/util/util.h index ba5ea4f..39966d0 100644 --- a/lib/util/util.h +++ b/lib/util/util.h @@ -18,6 +18,8 @@ #ifndef UTIL_H #define UTIL_H +#include <stdint.h> + #ifndef container_of #define container_of(_ptr, _type, _member) ({ \ const typeof( ((_type *)0)->_member ) *__mptr = (_ptr); \ @@ -47,5 +49,7 @@ #define build_assert(x) \ do { (void)sizeof(char[(x)?1:-1]); } while (0) +void mac_str(uint8_t *mac, unsigned int maclen, char *buf, unsigned int buflen); + #endif /* UTIL_H */ |