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cursor: ignore posix_fallocate in shm_pool_resize if not supported by FS

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Signed-off-by: Jan Beich <jbeich@FreeBSD.org>
This commit is contained in:
Jan Beich 2020-02-15 15:16:51 +00:00
parent 1283d54dac
commit 3a3dd0820d
1 changed files with 8 additions and 4 deletions
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12
cursor/wayland-cursor.c
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@ -83,15 +83,19 @@ err_free:
static int
shm_pool_resize(struct shm_pool *pool, int size)
{
if (ftruncate(pool->fd, size) < 0)
return 0;
#ifdef HAVE_POSIX_FALLOCATE
/*
* Filesystems that do support fallocate will return EINVAL or
* EOPNOTSUPP. In this case we need to fall back to ftruncate
*/
errno = posix_fallocate(pool->fd, 0, size);
if (errno != 0)
if (errno != 0 && errno != EINVAL && errno != EOPNOTSUPP)
return 0;
#endif
if (ftruncate(pool->fd, size) < 0)
return 0;
wl_shm_pool_resize(pool->pool, size);
munmap(pool->data, pool->size);