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#include <sys/mman.h> #include <fcntl.h> #include <sys/stat.h> #include "syscall.h" #include "kstat.h" const char unsigned *__map_file(const char *pathname, size_t *size) { struct kstat st; const unsigned char *map = MAP_FAILED; int fd = sys_open(pathname, O_RDONLY|O_CLOEXEC|O_NONBLOCK); if (fd < 0) return 0; if (!syscall(SYS_fstat, fd, &st)) { map = __mmap(0, st.st_size, PROT_READ, MAP_SHARED, fd, 0); *size = st.st_size; } __syscall(SYS_close, fd); return map == MAP_FAILED ? 0 : map; } |