diff options
Diffstat (limited to 'libc/bionic/spawn.cpp')
| -rw-r--r-- | libc/bionic/spawn.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libc/bionic/spawn.cpp b/libc/bionic/spawn.cpp index 314a05669..59f763138 100644 --- a/libc/bionic/spawn.cpp +++ b/libc/bionic/spawn.cpp @@ -30,10 +30,12 @@ #include <errno.h> #include <fcntl.h> +#include <linux/close_range.h> #include <signal.h> #include <stdlib.h> #include <string.h> #include <sys/resource.h> +#include <sys/syscall.h> #include <unistd.h> #include <android/fdsan.h> @@ -49,6 +51,9 @@ static int set_cloexec(int i) { // mark all open fds except stdin/out/err as close-on-exec static int cloexec_except_stdioe() { + // requires 5.11+ or ACK 5.10-T kernel, otherwise returns ENOSYS or EINVAL + if (!syscall(SYS_close_range, 3, ~0U, CLOSE_RANGE_CLOEXEC)) return 0; + // unfortunately getrlimit can lie: // - both soft and hard limits can be lowered to 0, with fds still open, so it can underestimate // - in practice it usually is some really large value (like 32K or more) |