diff options
| author | Ian Moffett <ian@osmora.org> | 2024-03-26 18:42:40 -0400 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2024-03-26 18:42:40 -0400 |
| commit | a38886b264aee28ab587e1297df23bc5442cbb0e (patch) | |
| tree | dc4867cd88d3beb966fbc2f38801872e25ac0c5c | |
| parent | 54224fb3d937811de957d51596602c0f2afc5fbe (diff) | |
kernel: filedesc: Add more comments
Signed-off-by: Ian Moffett <ian@osmora.org>
| -rw-r--r-- | sys/kern/kern_filedesc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/kern/kern_filedesc.c b/sys/kern/kern_filedesc.c index c610747..f340671 100644 --- a/sys/kern/kern_filedesc.c +++ b/sys/kern/kern_filedesc.c @@ -56,6 +56,7 @@ make_write_buf(struct proc *td, const void *data, char **buf_out, size_t count) { char *buf = NULL; + /* Count cannot be 0 or exceed the max size */ if (count > MAX_RW_SIZE || count == 0) { return -EINVAL; } @@ -130,8 +131,10 @@ fd_alloc(struct proc *td, struct filedesc **fd_out) __assert(td != NULL); } + /* Find free fd table entry */ for (size_t i = 0; i < PROC_MAX_FDS; ++i) { if (td->fds[i] != NULL) { + /* In use */ continue; } |