c039dbd5f4
This extends the x86 copy of the sysvipc data structures to deal with 32-bit user space that has 64-bit time_t and wants to see timestamps beyond 2038. Fortunately, x86 has padding for this purpose in all the data structures, so we can just add extra fields. With msgid64_ds and shmid64_ds, the data structure is identical to the asm-generic version, which we have already extended. For some reason however, the 64-bit version of semid64_ds ended up with extra padding, so I'm implementing the same approach as the asm-generic version here, by using separate fields for the upper and lower halves of the two timestamps. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
35 lines
1 KiB
C
35 lines
1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _ASM_X86_SEMBUF_H
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#define _ASM_X86_SEMBUF_H
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/*
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* The semid64_ds structure for x86 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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* x86_64 and x32 incorrectly added padding here, so the structures
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* are still incompatible with the padding on x86.
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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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#ifdef __i386__
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unsigned long sem_otime; /* last semop time */
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unsigned long sem_otime_high;
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unsigned long sem_ctime; /* last change time */
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unsigned long sem_ctime_high;
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#else
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__kernel_time_t sem_otime; /* last semop time */
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__kernel_ulong_t __unused1;
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__kernel_time_t sem_ctime; /* last change time */
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__kernel_ulong_t __unused2;
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#endif
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__kernel_ulong_t sem_nsems; /* no. of semaphores in array */
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__kernel_ulong_t __unused3;
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__kernel_ulong_t __unused4;
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};
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#endif /* _ASM_X86_SEMBUF_H */
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