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author | Karel Zak | 2011-11-15 15:17:19 +0100 |
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committer | Karel Zak | 2011-11-15 15:17:19 +0100 |
commit | 12089155210f8d84054cc8413d79cd2800d26929 (patch) | |
tree | 77189501ba877049f4e6051b9fd008a57c6fc434 /lib/match.c | |
parent | libblkid: export PTMAGIC also if only PTTYPE requested (diff) | |
download | kernel-qcow2-util-linux-12089155210f8d84054cc8413d79cd2800d26929.tar.gz kernel-qcow2-util-linux-12089155210f8d84054cc8413d79cd2800d26929.tar.xz kernel-qcow2-util-linux-12089155210f8d84054cc8413d79cd2800d26929.zip |
lib,match: split match_fstype() from libmount
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'lib/match.c')
-rw-r--r-- | lib/match.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/lib/match.c b/lib/match.c new file mode 100644 index 000000000..c5c48a0f6 --- /dev/null +++ b/lib/match.c @@ -0,0 +1,51 @@ +/* + * Copyright (C) 2011 Karel Zak <kzak@redhat.com> + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + */ + +#include <string.h> + +/* + * match_fstype: + * @type: filesystem type + * @pattern: filesystem name or comma delimited list of names + * + * The @pattern list of filesystem can be prefixed with a global + * "no" prefix to invert matching of the whole list. The "no" could + * also be used for individual items in the @pattern list. So, + * "nofoo,bar" has the same meaning as "nofoo,nobar". + */ +int match_fstype(const char *type, const char *pattern) +{ + int no = 0; /* negated types list */ + int len; + const char *p; + + if (!pattern && !type) + return 1; + if (!pattern) + return 0; + + if (!strncmp(pattern, "no", 2)) { + no = 1; + pattern += 2; + } + + /* Does type occur in types, separated by commas? */ + len = strlen(type); + p = pattern; + while(1) { + if (!strncmp(p, "no", 2) && !strncmp(p+2, type, len) && + (p[len+2] == 0 || p[len+2] == ',')) + return 0; + if (strncmp(p, type, len) == 0 && (p[len] == 0 || p[len] == ',')) + return !no; + p = strchr(p,','); + if (!p) + break; + p++; + } + return no; +} |