diff options
Diffstat (limited to 'libc-top-half/musl/src/time/__map_file.c')
-rw-r--r-- | libc-top-half/musl/src/time/__map_file.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/time/__map_file.c b/libc-top-half/musl/src/time/__map_file.c new file mode 100644 index 0000000..d3cefa8 --- /dev/null +++ b/libc-top-half/musl/src/time/__map_file.c @@ -0,0 +1,19 @@ +#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; +} |