diff options
| author |   Tom Jones <thj@freebsd.org> | 2024-01-31 10:44:14 +0000 |
|---|---|---|
| committer |   Florin Coras <florin.coras@gmail.com> | 2024-02-23 18:48:29 +0000 |
| commit | eceef16b5c5963ed27aa16b2ead4654b5a7dd391 (patch) | |
| tree | 545fc8d3004f550f04a7c7ccb8877b82fbe3f668 /src/svm/svm.c | |
| parent | b613d411a4c76ca69b1a57d239ec617d1e4f410e (diff) | |
svm: Use ftruncate to expand svm on FreeBSD
Linux doesn't support the Linux idiom of using lseek and a write to set
the size of a file, instead use ftruncate to accomplish the same effect.
This change is taken from the Nanoteq VPP port commit:
https://github.com/ftk-ntq/vpp/commit/04a1b19b37e791accc61b91f3f413d8bc8b1ff8f
Type: improvement
Change-Id: Ie0b83e751b8b8f20b6814e5c9f760035747dfad9
Signed-off-by: Tom Jones <thj@freebsd.org>
Diffstat (limited to 'src/svm/svm.c')
| -rw-r--r-- | src/svm/svm.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/svm/svm.c b/src/svm/svm.c index 0a910558f6e..5580808909a 100644 --- a/src/svm/svm.c +++ b/src/svm/svm.c @@ -551,7 +551,6 @@ svm_map_region (svm_map_region_args_t * a) int svm_fd; svm_region_t *rp; int deadman = 0; - u8 junk = 0; void *oldheap; int rv; int pid_holding_region_lock; @@ -582,6 +581,15 @@ svm_map_region (svm_map_region_args_t * a) vec_free (shm_name); +#ifdef __FreeBSD__ + if (ftruncate (svm_fd, a->size) < 0) + { + clib_warning ("ftruncate region size"); + close (svm_fd); + return (0); + } +#else + u8 junk = 0; if (lseek (svm_fd, a->size, SEEK_SET) == (off_t) - 1) { clib_warning ("seek region size"); @@ -594,6 +602,7 @@ svm_map_region (svm_map_region_args_t * a) close (svm_fd); return (0); } +#endif /* __FreeBSD__ */ rp = mmap (uword_to_pointer (a->baseva, void *), a->size, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_FIXED, svm_fd, 0); |