Use openat syscall if available
Some architectures like AArch64 may not have the open syscall because it was superseded by the openat syscall, so check and use SYS_openat if SYS_open is not available. Additionally, Android headers for AArch64 define SYS_open to __NR_open, even though __NR_open is undefined. Undefine SYS_open in that case so SYS_openat is used.
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committed by
David Goldblatt
parent
4403c9ab44
commit
ae248a2160
@@ -14,6 +14,11 @@
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# if !defined(SYS_write) && defined(__NR_write)
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# define SYS_write __NR_write
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# endif
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# if defined(SYS_open) && defined(__aarch64__)
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/* Android headers may define SYS_open to __NR_open even though
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* __NR_open may not exist on AArch64 (superseded by __NR_openat). */
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# undef SYS_open
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# endif
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# include <sys/uio.h>
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# endif
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# include <pthread.h>
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