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authorLaurent Bercot <ska-skaware@skarnet.org>2014-09-18 18:55:44 +0000
committerLaurent Bercot <ska-skaware@skarnet.org>2014-09-18 18:55:44 +0000
commit3534b428629be185e096be99e3bd5fdfe32d5544 (patch)
tree210ef3198ed66bc7f7b7bf6a85e4579f455e5a36 /src/libunixonacid/mkdir_unique.c
downloadskalibs-3534b428629be185e096be99e3bd5fdfe32d5544.tar.xz
initial commit with rc for skalibs-2.0.0.0
Diffstat (limited to 'src/libunixonacid/mkdir_unique.c')
-rw-r--r--src/libunixonacid/mkdir_unique.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/src/libunixonacid/mkdir_unique.c b/src/libunixonacid/mkdir_unique.c
new file mode 100644
index 0000000..523ecef
--- /dev/null
+++ b/src/libunixonacid/mkdir_unique.c
@@ -0,0 +1,24 @@
+/* ISC license. */
+
+#include <sys/stat.h>
+#include <skalibs/stralloc.h>
+#include <skalibs/random.h>
+#include <skalibs/unix-transactional.h>
+
+int mkdir_unique (stralloc *sa, char const *fn, unsigned int mode)
+{
+ unsigned int base = sa->len ;
+ int wasnull = !sa->s ;
+ if (!stralloc_cats(sa, fn)) return 0 ;
+ if (!stralloc_cats(sa, "/mkdir_unique")) goto fail ;
+ if (random_sauniquename(sa, 8) < 0) goto fail ;
+ if (!stralloc_0(sa)) goto fail ;
+ if (mkdir(sa->s + base, mode) < 0) goto fail ;
+ sa->len-- ;
+ return 1 ;
+
+ fail:
+ if (wasnull) stralloc_free(sa) ;
+ else sa->len = base ;
+ return 0 ;
+}