From f5e48e94a2f4d4bbd6e5628c7f2afafc6dbcc459 Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Thu, 7 Mar 2024 17:28:52 -0500 Subject: build: Build mlibc + add distclean target Signed-off-by: Ian Moffett --- lib/mlibc/sysdeps/aero/generic/filesystem.cpp | 472 -------------------------- 1 file changed, 472 deletions(-) delete mode 100644 lib/mlibc/sysdeps/aero/generic/filesystem.cpp (limited to 'lib/mlibc/sysdeps/aero/generic/filesystem.cpp') diff --git a/lib/mlibc/sysdeps/aero/generic/filesystem.cpp b/lib/mlibc/sysdeps/aero/generic/filesystem.cpp deleted file mode 100644 index 049f4c0..0000000 --- a/lib/mlibc/sysdeps/aero/generic/filesystem.cpp +++ /dev/null @@ -1,472 +0,0 @@ -#include "mlibc/fsfd_target.hpp" -#include - -#include -#include -#include - -#include -#include -#include -#include - -#include - -#include -#include - -namespace mlibc { -int sys_write(int fd, const void *buffer, size_t count, ssize_t *written) { - auto result = syscall(SYS_WRITE, fd, buffer, count); - - if (result < 0) { - return -result; - } - - *written = result; - return 0; -} - -int sys_read(int fd, void *buf, size_t count, ssize_t *bytes_read) { - auto result = syscall(SYS_READ, fd, buf, count); - - if (result < 0) { - *bytes_read = 0; - return -result; - } - - *bytes_read = result; - return 0; -} - -// clang-format off -int sys_pwrite(int fd, const void *buffer, size_t count, off_t off, - ssize_t *written) UNIMPLEMENTED("sys_pwrite") - -// clang-format off -int sys_pread(int fd, void *buf, size_t count, - off_t off, ssize_t *bytes_read) UNIMPLEMENTED("sys_pread") - -int sys_seek(int fd, off_t offset, int whence, off_t *new_offset) { - auto result = syscall(SYS_SEEK, fd, offset, whence); - - if (result < 0) { - return -result; - } - - *new_offset = result; - return 0; -} - -int sys_open(const char *filename, int flags, mode_t mode, int *fd) { - auto result = syscall(SYS_OPEN, 0, filename, strlen(filename), flags); - - if (result < 0) { - return -result; - } - - *fd = result; - return 0; -} - -int sys_close(int fd) { - auto result = syscall(SYS_CLOSE, fd); - - if (result < 0) { - return -result; - } - - return 0; -} - -int sys_access(const char *filename, int mode) { - auto result = - syscall(SYS_ACCESS, AT_FDCWD, filename, strlen(filename), mode, 0); - - if (result < 0) { - return -result; - } - - return 0; -} - -int sys_stat(fsfd_target fsfdt, int fd, const char *path, int flags, - struct stat *statbuf) { - switch (fsfdt) { - case fsfd_target::path: - fd = AT_FDCWD; - break; - case fsfd_target::fd: - flags |= AT_EMPTY_PATH; - - case fsfd_target::fd_path: - break; - - default: - __ensure(!"Invalid fsfd_target"); - __builtin_unreachable(); - } - - auto ret = syscall(SYS_FSTAT, fd, path, strlen(path), flags, statbuf); - if(int e = sc_error(ret); e) - return e; - return 0; -} - -int sys_ioctl(int fd, unsigned long request, void *arg, int *result) { - auto sys_res = syscall(SYS_IOCTL, fd, request, arg); - - if (sys_res < 0) { - return -sys_res; - } - - if (result) - *result = sys_res; - return 0; -} - -int sys_isatty(int fd) { - // NOTE: The easiest way to check if a file descriptor is a TTY is to - // do an ioctl of TIOCGWINSZ on it and see if it succeeds :^) - struct winsize ws; - int result; - - if (!sys_ioctl(fd, TIOCGWINSZ, &ws, &result)) { - return 0; - } - - return ENOTTY; -} - -int sys_tcgetattr(int fd, struct termios *attr) { - int result; - - if (int e = sys_ioctl(fd, TCGETS, (void *)attr, &result); e) - return e; - - return 0; -} - -int sys_tcsetattr(int fd, int optional_action, const struct termios *attr) { - int req; - - switch (optional_action) { - case TCSANOW: req = TCSETS; break; - case TCSADRAIN: req = TCSETSW; break; - case TCSAFLUSH: req = TCSETSF; break; - default: return EINVAL; - } - - if (int e = sys_ioctl(fd, req, (void *)attr, NULL); e) - return e; - - return 0; -} - -int sys_mkdir(const char *path, mode_t) { - auto result = syscall(SYS_MKDIR, path, strlen(path)); - - if (result < 0) { - return -result; - } - - return 0; -} - -int sys_link(const char *srcpath, const char *destpath) { - auto result = - syscall(SYS_LINK, srcpath, strlen(srcpath), destpath, strlen(destpath)); - - if (result < 0) { - return -result; - } - - return 0; -} - -int sys_rmdir(const char *path) { - return sys_unlinkat(AT_FDCWD, path, AT_REMOVEDIR); -} - -int sys_unlinkat(int fd, const char *path, int flags) { - auto ret = syscall(SYS_UNLINK, fd, path, strlen(path), flags); - if (int e = sc_error(ret); e) - return e; - return 0; -} - -struct aero_dir_entry { - size_t inode; - size_t offset; - size_t reclen; - size_t filetyp; - char name[]; -} __attribute__((__packed__)); - -int sys_read_entries(int handle, void *buffer, size_t max_size, - size_t *bytes_read) { - auto result = syscall(SYS_GETDENTS, handle, buffer, max_size); - - // Check if we got an error. - if (result < 0) { - *bytes_read = 0; - return -result; - } - - // Nothing to read. - if (result == 0) { - *bytes_read = 0; - return 0; - } - - auto entry = (struct aero_dir_entry *)buffer; - - struct dirent dirent = { - .d_ino = static_cast(entry->inode), - .d_off = static_cast(entry->offset), - .d_reclen = static_cast(entry->reclen), - .d_type = static_cast(entry->filetyp), - }; - - // The reclen is the size of the dirent struct, plus the size of the name. - auto name_size = entry->reclen - sizeof(struct aero_dir_entry); - __ensure(name_size < 255); - - memcpy(&dirent.d_name, entry->name, name_size); - *bytes_read = entry->reclen; - - memcpy(buffer, &dirent, sizeof(struct dirent)); - return 0; -} - -int sys_open_dir(const char *path, int *handle) { - return sys_open(path, O_DIRECTORY, 0, handle); -} - -int sys_rename(const char *path, const char *new_path) { - auto result = - syscall(SYS_RENAME, path, strlen(path), new_path, strlen(new_path)); - - if (result < 0) { - return -result; - } - - return 0; -} - -int sys_readlink(const char *path, void *buffer, size_t max_size, - ssize_t *length) { - auto result = syscall(SYS_READ_LINK, path, strlen(path), buffer, max_size); - - if (result < 0) { - return -result; - } - - *length = result; - return 0; -} - -int sys_dup(int fd, int flags, int *newfd) { - auto result = syscall(SYS_DUP, fd, flags); - - if (result < 0) { - return -result; - } - - *newfd = result; - return 0; -} - -int sys_dup2(int fd, int flags, int newfd) { - auto result = syscall(SYS_DUP2, fd, newfd, flags); - - if (result < 0) { - return -result; - } - - return 0; -} - -int sys_fcntl(int fd, int request, va_list args, int *result_value) { - auto result = syscall(SYS_FCNTL, fd, request, va_arg(args, uint64_t)); - - if (result < 0) { - return -result; - } - - *result_value = result; - return 0; -} - -// int sys_chmod(const char *pathname, mode_t mode) UNIMPLEMENTED("sys_chmod") - -int sys_pipe(int *fds, int flags) { - auto result = syscall(SYS_PIPE, fds, flags); - - if (result < 0) { - return -result; - } - - return 0; -} - -// epoll API syscalls: -int sys_epoll_create(int flags, int *fd) { - auto result = syscall(SYS_EPOLL_CREATE, flags); - - if (result < 0) { - return -result; - } - - *fd = result; - return 0; -} - -int sys_epoll_ctl(int epfd, int mode, int fd, struct epoll_event *ev) { - auto result = syscall(SYS_EPOLL_CTL, epfd, mode, fd, ev); - - if (result < 0) { - return -result; - } - - return 0; -} - -int sys_epoll_pwait(int epfd, struct epoll_event *ev, int n, int timeout, - const sigset_t *sigmask, int *raised) { - auto result = syscall(SYS_EPOLL_PWAIT, epfd, ev, n, timeout, sigmask); - - if (result < 0) { - return -result; - } - - *raised = result; - return 0; -} - -int sys_eventfd_create(unsigned int initval, int flags, int *fd) { - auto result = syscall(SYS_EVENT_FD, initval, flags); - - if (result < 0) { - return -result; - } - - *fd = result; - return 0; -} - -int sys_ppoll(struct pollfd *fds, int nfds, const struct timespec *timeout, - const sigset_t *sigmask, int *num_events) { - auto result = syscall(SYS_POLL, fds, nfds, timeout, sigmask); - - if (result < 0) { - return -result; - } - - *num_events = result; - return 0; -} - -int sys_poll(struct pollfd *fds, nfds_t count, int timeout, int *num_events) { - struct timespec ts; - ts.tv_sec = timeout / 1000; - ts.tv_nsec = (timeout % 1000) * 1000000; - - return sys_ppoll(fds, count, &ts, NULL, num_events); -} - -#ifndef MLIBC_BUILDING_RTDL -#include -int sys_ptsname(int fd, char *buffer, size_t length) { - int index; - if (int e = sys_ioctl(fd, TIOCGPTN, &index, NULL); e) - return e; - if ((size_t)snprintf(buffer, length, "/dev/pts/%d", index) >= length) { - return ERANGE; - } - return 0; -} - -int sys_pselect(int num_fds, fd_set *read_set, fd_set *write_set, - fd_set *except_set, const struct timespec *timeout, - const sigset_t *sigmask, int *num_events) { - int fd = epoll_create1(0); - if (fd == -1) - return -1; - - for (int k = 0; k < FD_SETSIZE; k++) { - struct epoll_event ev; - memset(&ev, 0, sizeof(struct epoll_event)); - - if (read_set && FD_ISSET(k, read_set)) - ev.events |= EPOLLIN; - if (write_set && FD_ISSET(k, write_set)) - ev.events |= EPOLLOUT; - if (except_set && FD_ISSET(k, except_set)) - ev.events |= EPOLLPRI; - - if (!ev.events) - continue; - - ev.data.u32 = k; - if (epoll_ctl(fd, EPOLL_CTL_ADD, k, &ev)) - return -1; - } - - struct epoll_event evnts[16]; - int n = epoll_pwait( - fd, evnts, 16, - timeout ? (timeout->tv_sec * 1000 + timeout->tv_nsec / 100) : -1, - sigmask); - - if (n == -1) - return -1; - - fd_set res_read_set; - fd_set res_write_set; - fd_set res_except_set; - FD_ZERO(&res_read_set); - FD_ZERO(&res_write_set); - FD_ZERO(&res_except_set); - - int m = 0; - - for (int i = 0; i < n; i++) { - int k = evnts[i].data.u32; - - if (read_set && FD_ISSET(k, read_set) && - evnts[i].events & (EPOLLIN | EPOLLERR | EPOLLHUP)) { - FD_SET(k, &res_read_set); - m++; - } - - if (write_set && FD_ISSET(k, write_set) && - evnts[i].events & (EPOLLOUT | EPOLLERR | EPOLLHUP)) { - FD_SET(k, &res_write_set); - m++; - } - - if (except_set && FD_ISSET(k, except_set) && - evnts[i].events & EPOLLPRI) { - FD_SET(k, &res_except_set); - m++; - } - } - - if (close(fd)) - __ensure("mlibc::pselect: close() failed on epoll file"); - - if (read_set) - memcpy(read_set, &res_read_set, sizeof(fd_set)); - - if (write_set) - memcpy(write_set, &res_write_set, sizeof(fd_set)); - - if (except_set) - memcpy(except_set, &res_except_set, sizeof(fd_set)); - - *num_events = m; - return 0; -} -#endif // #ifndef MLIBC_BUILDING_RTDL -} // namespace mlibc -- cgit v1.2.3