diff options
| author | Shu-Chun Weng <scw@google.com> | 2019-08-19 11:09:47 -0700 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2019-09-11 08:46:17 +0200 |
| commit | 9bdfa4d23f4395dab89a60eb6b05a0308792bd66 (patch) | |
| tree | 34e7c3dfeb9e5998a9c29bc76734cd9cf658769a /linux-user | |
| parent | 7f4341e84bb867c6e3397a978d3ee131bf8a889b (diff) | |
linux-user: add memfd_create
Add support for the memfd_create syscall. If the host does not have the
libc wrapper, translate to a direct syscall with NC-macro.
Buglink: https://bugs.launchpad.net/qemu/+bug/1734792
Signed-off-by: Shu-Chun Weng <scw@google.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20190819180947.180725-1-scw@google.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/syscall.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index b42f59a32c..6928f654ce 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -20,6 +20,7 @@ #include "qemu/osdep.h" #include "qemu/cutils.h" #include "qemu/path.h" +#include "qemu/memfd.h" #include "qemu/queue.h" #include <elf.h> #include <endian.h> @@ -11938,6 +11939,17 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, /* PowerPC specific. */ return do_swapcontext(cpu_env, arg1, arg2, arg3); #endif +#ifdef TARGET_NR_memfd_create + case TARGET_NR_memfd_create: + p = lock_user_string(arg1); + if (!p) { + return -TARGET_EFAULT; + } + ret = get_errno(memfd_create(p, arg2)); + fd_trans_unregister(ret); + unlock_user(p, arg1, 0); + return ret; +#endif default: qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num); |