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Side by Side Diff: fusl/src/mman/mmap.c

Issue 1714623002: [fusl] clang-format fusl (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: headers too Created 4 years, 10 months ago
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1 #include <unistd.h> 1 #include <unistd.h>
2 #include <sys/mman.h> 2 #include <sys/mman.h>
3 #include <errno.h> 3 #include <errno.h>
4 #include <stdint.h> 4 #include <stdint.h>
5 #include <limits.h> 5 #include <limits.h>
6 #include "syscall.h" 6 #include "syscall.h"
7 #include "libc.h" 7 #include "libc.h"
8 8
9 static void dummy(void) { } 9 static void dummy(void) {}
10 weak_alias(dummy, __vm_wait); 10 weak_alias(dummy, __vm_wait);
11 11
12 #define UNIT SYSCALL_MMAP2_UNIT 12 #define UNIT SYSCALL_MMAP2_UNIT
13 #define OFF_MASK ((-0x2000ULL << (8*sizeof(long)-1)) | (UNIT-1)) 13 #define OFF_MASK ((-0x2000ULL << (8 * sizeof(long) - 1)) | (UNIT - 1))
14 14
15 void *__mmap(void *start, size_t len, int prot, int flags, int fd, off_t off) 15 void* __mmap(void* start, size_t len, int prot, int flags, int fd, off_t off) {
16 { 16 if (off & OFF_MASK) {
17 » if (off & OFF_MASK) { 17 errno = EINVAL;
18 » » errno = EINVAL; 18 return MAP_FAILED;
19 » » return MAP_FAILED; 19 }
20 » } 20 if (len >= PTRDIFF_MAX) {
21 » if (len >= PTRDIFF_MAX) { 21 errno = ENOMEM;
22 » » errno = ENOMEM; 22 return MAP_FAILED;
23 » » return MAP_FAILED; 23 }
24 » } 24 if (flags & MAP_FIXED) {
25 » if (flags & MAP_FIXED) { 25 __vm_wait();
26 » » __vm_wait(); 26 }
27 » }
28 #ifdef SYS_mmap2 27 #ifdef SYS_mmap2
29 » return (void *)syscall(SYS_mmap2, start, len, prot, flags, fd, off/UNIT) ; 28 return (void*)syscall(SYS_mmap2, start, len, prot, flags, fd, off / UNIT);
30 #else 29 #else
31 » return (void *)syscall(SYS_mmap, start, len, prot, flags, fd, off); 30 return (void*)syscall(SYS_mmap, start, len, prot, flags, fd, off);
32 #endif 31 #endif
33 } 32 }
34 33
35 weak_alias(__mmap, mmap); 34 weak_alias(__mmap, mmap);
36 35
37 weak_alias(__mmap, mmap64); 36 weak_alias(__mmap, mmap64);
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