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1 #include <sys/mman.h> | 1 #include <sys/mman.h> |
2 #include <fcntl.h> | 2 #include <fcntl.h> |
3 #include <sys/stat.h> | 3 #include <sys/stat.h> |
4 #include "syscall.h" | 4 #include "syscall.h" |
5 | 5 |
6 void *__mmap(void *, size_t, int, int, int, off_t); | 6 void* __mmap(void*, size_t, int, int, int, off_t); |
7 | 7 |
8 const char unsigned *__map_file(const char *pathname, size_t *size) | 8 const char unsigned* __map_file(const char* pathname, size_t* size) { |
9 { | 9 struct stat st; |
10 » struct stat st; | 10 const unsigned char* map = MAP_FAILED; |
11 » const unsigned char *map = MAP_FAILED; | 11 int fd = __sys_open(pathname, O_RDONLY | O_CLOEXEC | O_NONBLOCK); |
12 » int fd = __sys_open(pathname, O_RDONLY|O_CLOEXEC|O_NONBLOCK); | 12 if (fd < 0) |
13 » if (fd < 0) return 0; | 13 return 0; |
14 » if (!__syscall(SYS_fstat, fd, &st)) { | 14 if (!__syscall(SYS_fstat, fd, &st)) { |
15 » » map = __mmap(0, st.st_size, PROT_READ, MAP_SHARED, fd, 0); | 15 map = __mmap(0, st.st_size, PROT_READ, MAP_SHARED, fd, 0); |
16 » » *size = st.st_size; | 16 *size = st.st_size; |
17 » } | 17 } |
18 » __syscall(SYS_close, fd); | 18 __syscall(SYS_close, fd); |
19 » return map == MAP_FAILED ? 0 : map; | 19 return map == MAP_FAILED ? 0 : map; |
20 } | 20 } |
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