diff options
| -rw-r--r-- | sysdeps/unix/sysv/linux/getipv4sourcefilter.c | 24 |
1 files changed, 7 insertions, 17 deletions
diff --git a/sysdeps/unix/sysv/linux/getipv4sourcefilter.c b/sysdeps/unix/sysv/linux/getipv4sourcefilter.c index 8a367b1048..ce72becead 100644 --- a/sysdeps/unix/sysv/linux/getipv4sourcefilter.c +++ b/sysdeps/unix/sysv/linux/getipv4sourcefilter.c @@ -16,9 +16,9 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ -#include <alloca.h> #include <errno.h> #include <stdlib.h> +#include <scratch_buffer.h> #include <string.h> #include <stdint.h> #include <netinet/in.h> @@ -33,17 +33,12 @@ getipv4sourcefilter (int s, struct in_addr interface, struct in_addr group, /* We have to create an struct ip_msfilter object which we can pass to the kernel. */ socklen_t needed = IP_MSFILTER_SIZE (*numsrc); - int use_alloca = __libc_use_alloca (needed); - struct ip_msfilter *imsf; - if (use_alloca) - imsf = (struct ip_msfilter *) alloca (needed); - else - { - imsf = (struct ip_msfilter *) malloc (needed); - if (imsf == NULL) - return -1; - } + struct scratch_buffer buf; + scratch_buffer_init (&buf); + if (!scratch_buffer_set_array_size (&buf, 1, needed)) + return -1; + struct ip_msfilter *imsf = buf.data; imsf->imsf_multiaddr = group; imsf->imsf_interface = interface; @@ -61,12 +56,7 @@ getipv4sourcefilter (int s, struct in_addr interface, struct in_addr group, *numsrc = imsf->imsf_numsrc; } - if (! use_alloca) - { - int save_errno = errno; - free (imsf); - __set_errno (save_errno); - } + scratch_buffer_free (&buf); return result; } |