diff options
| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2024-06-05 10:34:17 +0300 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2024-06-05 15:11:21 +0300 |
| commit | 9f0d88695ed6691a3e18c256d9d49862b3af6e34 (patch) | |
| tree | 18b56246572ec71f8dd2f7ebc06ac1251f996f8c | |
| parent | 9c2ca46391ea2ba089d5d082a0dbdd3b15b28498 (diff) | |
libcamera: dma_buf_allocator: Work around lack of memfd_create() in uClibc
uClibc doesn't provide a memfd_create() implementation. Fix it by using
a direct syscall when the function isn't available.
Fixes: ea4baaacc325 ("libcamera: DmaBufAllocator: Support allocating from /dev/udmabuf")
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
| -rw-r--r-- | src/libcamera/dma_buf_allocator.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/libcamera/dma_buf_allocator.cpp b/src/libcamera/dma_buf_allocator.cpp index 5ec29949..d7d08e18 100644 --- a/src/libcamera/dma_buf_allocator.cpp +++ b/src/libcamera/dma_buf_allocator.cpp @@ -13,6 +13,7 @@ #include <sys/ioctl.h> #include <sys/mman.h> #include <sys/stat.h> +#include <sys/syscall.h> #include <sys/types.h> #include <unistd.h> @@ -132,7 +133,11 @@ UniqueFD DmaBufAllocator::allocFromUDmaBuf(const char *name, std::size_t size) std::size_t pageMask = sysconf(_SC_PAGESIZE) - 1; size = (size + pageMask) & ~pageMask; +#if HAVE_MEMFD_CREATE int ret = memfd_create(name, MFD_ALLOW_SEALING | MFD_CLOEXEC); +#else + int ret = syscall(SYS_memfd_create, name, MFD_ALLOW_SEALING | MFD_CLOEXEC); +#endif if (ret < 0) { ret = errno; LOG(DmaBufAllocator, Error) |