52 lines
2.0 KiB
C
52 lines
2.0 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include <fcntl.h> /* IWYU pragma: export */
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/* This is defined since glibc-2.41. */
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#ifndef F_DUPFD_QUERY
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#define F_DUPFD_QUERY 1027
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#endif
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/* This is defined since glibc-2.39. */
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#ifndef F_SEAL_EXEC
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#define F_SEAL_EXEC 0x0020 /* prevent chmod modifying exec bits */
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#endif
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/* So O_LARGEFILE is generally implied by glibc, and defined to zero hence, because we only build in LFS
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* mode. However, when invoking fcntl(F_GETFL) the flag is ORed into the result anyway — glibc does not mask
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* it away. Which sucks. Let's define the actual value here, so that we can mask it ourselves.
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*
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* The precise definition is arch specific, so we use the values defined in the kernel (note that some
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* are hexa and others are octal; duplicated as-is from the kernel definitions):
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* - alpha, arm, arm64, m68k, mips, parisc, powerpc, sparc: each has a specific value;
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* - others: they use the "generic" value (defined in include/uapi/asm-generic/fcntl.h) */
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#if O_LARGEFILE != 0
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#define RAW_O_LARGEFILE O_LARGEFILE
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#else
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#if defined(__alpha__) || defined(__arm__) || defined(__aarch64__) || defined(__m68k__)
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#define RAW_O_LARGEFILE 0400000
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#elif defined(__mips__)
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#define RAW_O_LARGEFILE 0x2000
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#elif defined(__parisc__) || defined(__hppa__)
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#define RAW_O_LARGEFILE 000004000
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#elif defined(__powerpc__)
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#define RAW_O_LARGEFILE 0200000
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#elif defined(__sparc__)
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#define RAW_O_LARGEFILE 0x40000
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#else
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#define RAW_O_LARGEFILE 00100000
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#endif
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#endif
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/* This is defined since glibc-2.39. */
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#ifndef AT_HANDLE_FID
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#define AT_HANDLE_FID AT_REMOVEDIR
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#endif
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/* On musl, O_ACCMODE is defined as (03|O_SEARCH), unlike glibc which defines it as
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* (O_RDONLY|O_WRONLY|O_RDWR). Additionally, O_SEARCH is simply defined as O_PATH. This changes the behaviour
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* of O_ACCMODE in certain situations, which we don't want. This definition is copied from glibc and works
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* around the problems with musl's definition. */
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#define O_ACCMODE_STRICT (O_RDONLY|O_WRONLY|O_RDWR)
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