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Linux: Define MMAP_CALL_INTERNAL

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Unlike MMAP_CALL, this avoids a TCB dependency for an errno update
on failure.

<mmap_internal.h> cannot be included as is on several architectures
due to the definition of page_unit, so introduce a separate header
file for the definition of MMAP_CALL and MMAP_CALL_INTERNAL,
<mmap_call.h>.

Reviewed-by: Stefan Liebler <stli@linux.ibm.com>
This commit is contained in:
Florian Weimer
2022-05-04 15:37:21 +02:00
parent 60f0f2130d
commit c1b68685d4
3 changed files with 30 additions and 12 deletions
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6
sysdeps/unix/sysv/linux/mmap_internal.h
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@ -42,10 +42,6 @@ static uint64_t page_unit;
/* Do not accept offset not multiple of page size. */
#define MMAP_OFF_LOW_MASK (MMAP2_PAGE_UNIT - 1)
/* An architecture may override this. */
#ifndef MMAP_CALL
# define MMAP_CALL(__nr, __addr, __len, __prot, __flags, __fd, __offset) \
INLINE_SYSCALL_CALL (__nr, __addr, __len, __prot, __flags, __fd, __offset)
#endif
#include <mmap_call.h>
#endif /* MMAP_INTERNAL_LINUX_H */