diff options
| author | Ian Moffett <ian@osmora.org> | 2024-04-26 14:35:55 -0400 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2024-04-26 14:35:55 -0400 |
| commit | 314b80e0e9f8fee490b1d59a0c3db543513eb8be (patch) | |
| tree | e3ee58a52a2766d84ebc6c7908adb297e550e0ed | |
| parent | 2d405140e603beb44d8917b0bcf438b915007d12 (diff) | |
kernel: filedesc: Acquire mutex in write()
Signed-off-by: Ian Moffett <ian@osmora.org>
| -rw-r--r-- | sys/kern/kern_filedesc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/kern/kern_filedesc.c b/sys/kern/kern_filedesc.c index 7e65d77..f7ca2c8 100644 --- a/sys/kern/kern_filedesc.c +++ b/sys/kern/kern_filedesc.c @@ -246,6 +246,7 @@ write(int fd, const void *buf, size_t count) return -EBADF; } + mutex_acquire(&desc->lock); if (desc->oflag != O_WRONLY && desc->oflag != O_WRONLY) { ret = -EACCES; goto cleanup; @@ -271,6 +272,7 @@ write(int fd, const void *buf, size_t count) goto cleanup; } cleanup: + mutex_release(&desc->lock); dynfree(in_buf); return ret; } |