mirror of
https://github.com/fluencelabs/musl
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1cc81f5cb0
this commit has two major user-visible parts: zoneinfo-format time zones are now supported, and overflow handling is intended to be complete in the sense that all functions return a correct result if and only if the result fits in the destination type, and otherwise return an error. also, some noticable bugs in the way DST detection and normalization worked have been fixed, and performance may be better than before, but it has not been tested.
21 lines
584 B
C
21 lines
584 B
C
#include <sys/mman.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include "syscall.h"
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void *__mmap(void *, size_t, int, int, int, off_t);
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const char unsigned *__map_file(const char *pathname, size_t *size)
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{
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struct stat st;
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const unsigned char *map = MAP_FAILED;
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int flags = O_RDONLY|O_LARGEFILE|O_CLOEXEC|O_NOFOLLOW|O_NONBLOCK;
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int fd = __syscall(SYS_open, pathname, flags);
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if (fd < 0) return 0;
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if (!__syscall(SYS_fstat, fd, &st))
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map = __mmap(0, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
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__syscall(SYS_close);
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*size = st.st_size;
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return map == MAP_FAILED ? 0 : map;
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}
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