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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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91b9b0d718
sparc, uses a nonstandard variation of the generic sysvipc data structures, intended to have the padding moved around so it can deal with big-endian 32-bit user space that has 64-bit time_t. Unlike most architectures, sparc actually succeeded in defining this right for big-endian CPUs, but as everyone else got it wrong, we just use the same hack everywhere. This takes just take the same approach here that we have for the asm-generic headers and adds separate 32-bit fields for the upper halves of the timestamps, to let libc deal with the mess in user space. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
31 lines
891 B
C
31 lines
891 B
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _SPARC_SEMBUF_H
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#define _SPARC_SEMBUF_H
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/*
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* The semid64_ds structure for sparc architecture.
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* Note extra padding because this structure is passed back and forth
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* between kernel and user space.
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*
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* Pad space is left for:
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* - 2 miscellaneous 32-bit values
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*/
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struct semid64_ds {
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struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
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#if defined(__sparc__) && defined(__arch64__)
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__kernel_time_t sem_otime; /* last semop time */
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__kernel_time_t sem_ctime; /* last change time */
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#else
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unsigned long sem_otime_high;
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unsigned long sem_otime; /* last semop time */
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unsigned long sem_ctime_high;
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unsigned long sem_ctime; /* last change time */
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#endif
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unsigned long sem_nsems; /* no. of semaphores in array */
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unsigned long __unused1;
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unsigned long __unused2;
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};
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#endif /* _SPARC64_SEMBUF_H */
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