diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2014-09-29 17:12:59 +0200 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-09-29 16:28:24 +0100 |
| commit | ed9114356b587b362f5ed10e75366a4f07ed32af (patch) | |
| tree | 24a063327e9e7e424cb7ef04389df8dd64b0c4b9 /block/raw-posix.c | |
| parent | 0ebcc564533454853e66cbe665a0d23bf7199834 (diff) | |
raw-posix: Fix build without posix_fallocate()
Check for the presence of posix_fallocate() in configure and only
compile in support for PREALLOC_MODE_FALLOC when it's there.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'block/raw-posix.c')
| -rw-r--r-- | block/raw-posix.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/block/raw-posix.c b/block/raw-posix.c index a253697427..86ce4f2607 100644 --- a/block/raw-posix.c +++ b/block/raw-posix.c @@ -1416,16 +1416,21 @@ static int raw_create(const char *filename, QemuOpts *opts, Error **errp) goto out_close; } - if (prealloc == PREALLOC_MODE_FALLOC) { + switch (prealloc) { +#ifdef CONFIG_POSIX_FALLOCATE + case PREALLOC_MODE_FALLOC: /* posix_fallocate() doesn't set errno. */ result = -posix_fallocate(fd, 0, total_size); if (result != 0) { error_setg_errno(errp, -result, "Could not preallocate data for the new file"); } - } else if (prealloc == PREALLOC_MODE_FULL) { - buf = g_malloc0(65536); + break; +#endif + case PREALLOC_MODE_FULL: + { int64_t num = 0, left = total_size; + buf = g_malloc0(65536); while (left > 0) { num = MIN(left, 65536); @@ -1440,10 +1445,15 @@ static int raw_create(const char *filename, QemuOpts *opts, Error **errp) } fsync(fd); g_free(buf); - } else if (prealloc != PREALLOC_MODE_OFF) { + break; + } + case PREALLOC_MODE_OFF: + break; + default: result = -EINVAL; error_setg(errp, "Unsupported preallocation mode: %s", PreallocMode_lookup[prealloc]); + break; } out_close: |