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author | Bobby Bingham <koorogi@koorogi.info> | 2014-02-06 22:11:22 -0600 |
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committer | Bobby Bingham <koorogi@koorogi.info> | 2014-02-09 20:07:43 -0600 |
commit | fdf5f1b13123883ac1d5e298e5f32c7ed43578ce (patch) | |
tree | 56cddbaadf3f67c66a4914f4a3db7ae6d19a7aa6 /src/linux | |
parent | 7ee48f7b69523c68768684551bc37ba05496c27f (diff) | |
download | musl-fdf5f1b13123883ac1d5e298e5f32c7ed43578ce.zip musl-fdf5f1b13123883ac1d5e298e5f32c7ed43578ce.tar.gz musl-fdf5f1b13123883ac1d5e298e5f32c7ed43578ce.tar.bz2 |
clone: make clone a wrapper around __clone
The architecture-specific assembly versions of clone did not set errno on
failure, which is inconsistent with glibc. __clone still returns the error
via its return value, and clone is now a wrapper that sets errno as needed.
The public clone has also been moved to src/linux, as it's not directly
related to the pthreads API.
__clone is called by pthread_create, which does not report errors via
errno. Though not strictly necessary, it's nice to avoid clobbering errno
here.
Diffstat (limited to 'src/linux')
-rw-r--r-- | src/linux/clone.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/linux/clone.c b/src/linux/clone.c new file mode 100644 index 0000000..b9e5594 --- /dev/null +++ b/src/linux/clone.c @@ -0,0 +1,19 @@ +#include <stdarg.h> +#include <unistd.h> +#include "pthread_impl.h" +#include "syscall.h" + +int clone(int (*func)(void *), void *stack, int flags, void *arg, ...) +{ + va_list ap; + pid_t *ptid, *ctid; + void *tls; + + va_start(ap, arg); + ptid = va_arg(ap, pid_t *); + tls = va_arg(ap, void *); + ctid = va_arg(ap, pid_t *); + va_end(ap); + + return __syscall_ret(__clone(func, stack, flags, arg, ptid, tls, ctid)); +} |