diff options
Diffstat (limited to 'libc-top-half/musl/src/signal/sigaltstack.c')
-rw-r--r-- | libc-top-half/musl/src/signal/sigaltstack.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/signal/sigaltstack.c b/libc-top-half/musl/src/signal/sigaltstack.c new file mode 100644 index 0000000..d3a6e82 --- /dev/null +++ b/libc-top-half/musl/src/signal/sigaltstack.c @@ -0,0 +1,18 @@ +#include <signal.h> +#include <errno.h> +#include "syscall.h" + +int sigaltstack(const stack_t *restrict ss, stack_t *restrict old) +{ + if (ss) { + if (!(ss->ss_flags & SS_DISABLE) && ss->ss_size < MINSIGSTKSZ) { + errno = ENOMEM; + return -1; + } + if (ss->ss_flags & SS_ONSTACK) { + errno = EINVAL; + return -1; + } + } + return syscall(SYS_sigaltstack, ss, old); +} |