fcatomic: fallback to create a directory with FcAtomicLock
link(2) might be failed on the filesystem that doesn't support the hard link. e.g. FcAtomicLock() always fails on FAT filesystem when link(2) is available. So that may be a good idea to fallback if link(2) is failed.
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@ -130,6 +130,13 @@ FcAtomicLock (FcAtomic *atomic)
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return FcFalse;
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}
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ret = link ((char *) atomic->tmp, (char *) atomic->lck);
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if (ret < 0 && errno == EPERM)
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{
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/* the filesystem where atomic->lck points to may not supports
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* the hard link. so better try to fallback
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*/
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ret = mkdir ((char *) atomic->lck, 0600);
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}
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(void) unlink ((char *) atomic->tmp);
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#else
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ret = mkdir ((char *) atomic->lck, 0600);
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@ -195,7 +202,8 @@ void
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FcAtomicUnlock (FcAtomic *atomic)
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{
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#ifdef HAVE_LINK
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unlink ((char *) atomic->lck);
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if (unlink ((char *) atomic->lck) == -1)
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rmdir ((char *) atomic->lck);
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#else
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rmdir ((char *) atomic->lck);
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#endif
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