From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:47956) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R5yCd-0005fb-BH for qemu-devel@nongnu.org; Tue, 20 Sep 2011 07:09:28 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1R5yCY-00009E-Hl for qemu-devel@nongnu.org; Tue, 20 Sep 2011 07:09:27 -0400 Received: from mx1.redhat.com ([209.132.183.28]:53571) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R5yCY-00008u-6C for qemu-devel@nongnu.org; Tue, 20 Sep 2011 07:09:22 -0400 From: Kevin Wolf Date: Tue, 20 Sep 2011 13:11:52 +0200 Message-Id: <1316517112-9908-21-git-send-email-kwolf@redhat.com> In-Reply-To: <1316517112-9908-1-git-send-email-kwolf@redhat.com> References: <1316517112-9908-1-git-send-email-kwolf@redhat.com> Subject: [Qemu-devel] [PATCH 20/20] rbd: allow escaping in config string List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: anthony@codemonkey.ws Cc: kwolf@redhat.com, qemu-devel@nongnu.org From: Sage Weil The config string is variously delimited by =, @, and /, depending on the field. Allow these characters to be escaped by preceeding them with \. Signed-off-by: Sage Weil Signed-off-by: Kevin Wolf --- block/rbd.c | 29 +++++++++++++++++++++++++++-- 1 files changed, 27 insertions(+), 2 deletions(-) diff --git a/block/rbd.c b/block/rbd.c index 98efd2c..3068c82 100644 --- a/block/rbd.c +++ b/block/rbd.c @@ -102,8 +102,15 @@ static int qemu_rbd_next_tok(char *dst, int dst_len, *p = NULL; if (delim != '\0') { - end = strchr(src, delim); - if (end) { + for (end = src; *end; ++end) { + if (*end == delim) { + break; + } + if (*end == '\\' && end[1] != '\0') { + end++; + } + } + if (*end == delim) { *p = end + 1; *end = '\0'; } @@ -122,6 +129,19 @@ static int qemu_rbd_next_tok(char *dst, int dst_len, return 0; } +static void qemu_rbd_unescape(char *src) +{ + char *p; + + for (p = src; *src; ++src, ++p) { + if (*src == '\\' && src[1] != '\0') { + src++; + } + *p = *src; + } + *p = '\0'; +} + static int qemu_rbd_parsename(const char *filename, char *pool, int pool_len, char *snap, int snap_len, @@ -146,6 +166,7 @@ static int qemu_rbd_parsename(const char *filename, ret = -EINVAL; goto done; } + qemu_rbd_unescape(pool); if (strchr(p, '@')) { ret = qemu_rbd_next_tok(name, name_len, p, '@', "object name", &p); @@ -153,9 +174,11 @@ static int qemu_rbd_parsename(const char *filename, goto done; } ret = qemu_rbd_next_tok(snap, snap_len, p, ':', "snap name", &p); + qemu_rbd_unescape(snap); } else { ret = qemu_rbd_next_tok(name, name_len, p, ':', "object name", &p); } + qemu_rbd_unescape(name); if (ret < 0 || !p) { goto done; } @@ -211,6 +234,7 @@ static int qemu_rbd_set_conf(rados_t cluster, const char *conf) if (ret < 0) { break; } + qemu_rbd_unescape(name); if (!p) { error_report("conf option %s has no value", name); @@ -223,6 +247,7 @@ static int qemu_rbd_set_conf(rados_t cluster, const char *conf) if (ret < 0) { break; } + qemu_rbd_unescape(value); if (strcmp(name, "conf") == 0) { ret = rados_conf_read_file(cluster, value); -- 1.7.6.2