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| author | Kyle Evans <kevans@FreeBSD.org> | 2020-07-10 00:45:16 +0000 |
|---|---|---|
| committer | Kyle Evans <kevans@FreeBSD.org> | 2020-07-10 00:45:16 +0000 |
| commit | 423a033ba7bf9b38a4843ae9609019cc108647cf (patch) | |
| tree | adb2c8adf4db1385da4e903411234d6480f840d0 /lib/libc/sys | |
| parent | 3f07b9d9f87e28e577453e784ae369e18d35157b (diff) | |
| download | src-423a033ba7bf9b38a4843ae9609019cc108647cf.tar.gz src-423a033ba7bf9b38a4843ae9609019cc108647cf.zip | |
memfd_create: turn on SHM_GROW_ON_WRITE
memfd_create fds will no longer require an ftruncate(2) to set the size;
they'll grow (to the extent that it's possible) upon write(2)-like syscalls.
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D25502
Notes
Notes:
svn path=/head/; revision=363066
Diffstat (limited to 'lib/libc/sys')
| -rw-r--r-- | lib/libc/sys/shm_open.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/libc/sys/shm_open.c b/lib/libc/sys/shm_open.c index 7eb546552c30..cf89505b3d56 100644 --- a/lib/libc/sys/shm_open.c +++ b/lib/libc/sys/shm_open.c @@ -84,7 +84,7 @@ memfd_create(const char *name, unsigned int flags) /* We've already validated that we're sufficiently sized. */ snprintf(memfd_name, NAME_MAX + 1, "%s%s", MEMFD_NAME_PREFIX, name); oflags = O_RDWR; - shmflags = 0; + shmflags = SHM_GROW_ON_WRITE; if ((flags & MFD_CLOEXEC) != 0) oflags |= O_CLOEXEC; if ((flags & MFD_ALLOW_SEALING) != 0) |