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authorRich Felker <dalias@aerifal.cx>2011-02-19 09:40:07 -0500
committerRich Felker <dalias@aerifal.cx>2011-02-19 09:40:07 -0500
commit69ecbd0f3188be97f91cc0d6415836d23e88f7fc (patch)
tree0d74e8a311a2ec1a8d0be9fa0f09ac09004a448f /src/temp/mkstemp.c
parent2e6239dd064d201c6e1b0f589bae9ff27949d2eb (diff)
downloadmusl-69ecbd0f3188be97f91cc0d6415836d23e88f7fc.tar.gz
make mktemp match the historic behavior, and update functions that use it
the historic mktemp is supposed to blank the template string on failure, rather than returning 0. just zero the first character so that mkstemp and mkdtemp can still retry with O(1) space requirement.
Diffstat (limited to 'src/temp/mkstemp.c')
-rw-r--r--src/temp/mkstemp.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/temp/mkstemp.c b/src/temp/mkstemp.c
index 20019ed9..a390d427 100644
--- a/src/temp/mkstemp.c
+++ b/src/temp/mkstemp.c
@@ -11,14 +11,15 @@ char *__mktemp(char *);
int mkstemp(char *template)
{
- int fd, retries = 100;
+ int fd, retries = 100, t0 = *template;
while (retries--) {
- if (!__mktemp(template)) return -1;
+ if (!*__mktemp(template)) return -1;
if ((fd = open(template, O_RDWR | O_CREAT | O_EXCL, 0600))>=0)
return fd;
if (errno != EEXIST) return -1;
/* this is safe because mktemp verified
* that we have a valid template string */
+ template[0] = t0;
strcpy(template+strlen(template)-6, "XXXXXX");
}
return -1;