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Handle case where posix_fallocate is not supported for a filesystem.

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2017-12-02  Vladimir Kondratyev  <vladimir@kondratyev.su>
	    Cary Coutant  <ccoutant@gmail.com>

gold/
	PR gold/22540
	* output.cc (gold_fallocate): Trivial return for len == 0.
	Add fallback options when posix_fallocate and fallocate return
	not-supported errors.
This commit is contained in:
Cary Coutant 2017-12-02 09:56:40 -08:00
parent 158600eb98
commit 222b39c283
2 changed files with 23 additions and 3 deletions
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8
gold/ChangeLog
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@ -1,3 +1,11 @@
2017-12-02 Vladimir Kondratyev <vladimir@kondratyev.su>
Cary Coutant <ccoutant@gmail.com>
PR gold/22540
* output.cc (gold_fallocate): Trivial return for len == 0.
Add fallback options when posix_fallocate and fallocate return
not-supported errors.
2017-12-01 Cary Coutant <ccoutant@gmail.com>
PR gold/21090

18
gold/output.cc
View File

@ -127,14 +127,26 @@ namespace gold
static int
gold_fallocate(int o, off_t offset, off_t len)
{
if (len <= 0)
return 0;
#ifdef HAVE_POSIX_FALLOCATE
if (parameters->options().posix_fallocate())
return ::posix_fallocate(o, offset, len);
{
int err = ::posix_fallocate(o, offset, len);
if (err != EINVAL && err != ENOSYS && err != EOPNOTSUPP)
return err;
}
#endif // defined(HAVE_POSIX_FALLOCATE)
#ifdef HAVE_FALLOCATE
if (::fallocate(o, 0, offset, len) == 0)
return 0;
{
int err = ::fallocate(o, 0, offset, len);
if (err != EINVAL && err != ENOSYS && err != EOPNOTSUPP)
return err;
}
#endif // defined(HAVE_FALLOCATE)
if (::ftruncate(o, offset + len) < 0)
return errno;
return 0;