119 lines
2.6 KiB
C
119 lines
2.6 KiB
C
#include <fcntl.h>
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#include <stdarg.h>
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#include <sys/mman.h>
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#include <sys/select.h>
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#include <sys/stat.h>
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#include <sysdep.h>
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#include <unistd.h>
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int open(const char* pathname, int flags, ...)
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{
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mode_t mode = 0;
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if ((flags & O_CREAT) != 0) {
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va_list va;
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va_start(va, flags);
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mode = (mode_t)va_arg(va, unsigned);
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va_end(va);
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}
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int res = DO_SYSCALL_3(SYS_OPEN, pathname, flags, mode);
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RETURN_WITH_ERRNO(res, res, -1);
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}
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int creat(const char* path, mode_t mode)
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{
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int res = DO_SYSCALL_2(SYS_CREAT, path, mode);
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RETURN_WITH_ERRNO(res, res, -1);
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}
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int close(int fd)
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{
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int res = DO_SYSCALL_1(SYS_CLOSE, fd);
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RETURN_WITH_ERRNO(res, 0, -1);
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}
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ssize_t read(int fd, char* buf, size_t count)
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{
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return (ssize_t)DO_SYSCALL_3(SYS_READ, fd, buf, count);
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}
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ssize_t write(int fd, const void* buf, size_t count)
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{
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return (ssize_t)DO_SYSCALL_3(SYS_WRITE, fd, buf, count);
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}
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int dup(int oldfd)
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{
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int res = DO_SYSCALL_1(SYS_DUP, oldfd);
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RETURN_WITH_ERRNO(res, res, -1);
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}
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int dup2(int oldfd, int newfd)
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{
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int res = DO_SYSCALL_2(SYS_DUP2, oldfd, newfd);
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RETURN_WITH_ERRNO(res, res, -1);
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}
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off_t lseek(int fd, off_t off, int whence)
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{
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return (off_t)DO_SYSCALL_3(SYS_LSEEK, fd, off, whence);
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}
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int mkdir(const char* path)
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{
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int res = DO_SYSCALL_1(SYS_MKDIR, path);
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RETURN_WITH_ERRNO(res, 0, -1);
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}
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int rmdir(const char* path)
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{
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int res = DO_SYSCALL_1(SYS_RMDIR, path);
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RETURN_WITH_ERRNO(res, 0, -1);
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}
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int chdir(const char* path)
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{
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int res = DO_SYSCALL_1(SYS_CHDIR, path);
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RETURN_WITH_ERRNO(res, 0, -1);
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}
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char* getcwd(char* buf, size_t size)
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{
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int res = DO_SYSCALL_2(SYS_GETCWD, buf, size);
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RETURN_WITH_ERRNO(res, buf, NULL);
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}
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int unlink(const char* path)
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{
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int res = DO_SYSCALL_1(SYS_UNLINK, path);
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RETURN_WITH_ERRNO(res, 0, -1);
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}
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int fstat(int nfds, stat_t* stat)
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{
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int res = DO_SYSCALL_2(SYS_FSTAT, nfds, stat);
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RETURN_WITH_ERRNO(res, 0, -1);
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}
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int select(int nfds, fd_set_t* readfds, fd_set_t* writefds, fd_set_t* exceptfds, timeval_t* timeout)
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{
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int res = DO_SYSCALL_5(SYS_SELECT, nfds, readfds, writefds, exceptfds, timeout);
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RETURN_WITH_ERRNO(res, res, -1);
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}
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void* mmap(void* addr, size_t length, int prot, int flags, int fd, off_t offset)
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{
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mmap_params_t mmap_params = { 0 };
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mmap_params.addr = addr;
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mmap_params.size = length;
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mmap_params.prot = prot;
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mmap_params.flags = flags;
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mmap_params.fd = fd;
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mmap_params.offset = offset;
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return (void*)DO_SYSCALL_1(SYS_MMAP, &mmap_params);
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}
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int munmap(void* addr, size_t length)
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{
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int res = DO_SYSCALL_2(SYS_MUNMAP, addr, length);
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RETURN_WITH_ERRNO(res, 0, -1);
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} |