diff options
Diffstat (limited to 'lib/mlibc/sysdeps/lemon/generic/filesystem.cpp')
-rwxr-xr-x | lib/mlibc/sysdeps/lemon/generic/filesystem.cpp | 406 |
1 files changed, 0 insertions, 406 deletions
diff --git a/lib/mlibc/sysdeps/lemon/generic/filesystem.cpp b/lib/mlibc/sysdeps/lemon/generic/filesystem.cpp deleted file mode 100755 index 4a7d780..0000000 --- a/lib/mlibc/sysdeps/lemon/generic/filesystem.cpp +++ /dev/null @@ -1,406 +0,0 @@ -#include <lemon/syscall.h> - -#include <asm/ioctls.h> -#include <sys/ioctl.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <errno.h> -#include <dirent.h> -#include <limits.h> -#include <fcntl.h> -#include <string.h> - -#include <bits/ensure.h> -#include <mlibc/all-sysdeps.hpp> -#include <mlibc/debug.hpp> - -namespace mlibc{ - -typedef struct { - dev_t st_dev; - ino_t st_ino; - mode_t st_mode; - nlink_t st_nlink; - uid_t st_uid; - uid_t st_gid; - dev_t st_rdev; - off_t st_size; - int64_t st_blksize; - int64_t st_blocks; -} lemon_stat_t; - -int sys_write(int fd, const void* buffer, size_t count, ssize_t* written){ - long ret = syscall(SYS_WRITE, fd, (uintptr_t)buffer, count); - - if(ret < 0) - return -ret; - - *written = ret; - return 0; -} - -int sys_read(int fd, void *buf, size_t count, ssize_t *bytes_read) { - long ret = syscall(SYS_READ, fd, (uintptr_t)buf, count); - - if(ret < 0){ - *bytes_read = 0; - return -ret; - } - - *bytes_read = ret; - return 0; -} - -int sys_pwrite(int fd, const void* buffer, size_t count, off_t off, ssize_t* written){ - int ret = syscall(SYS_PWRITE, fd, (uintptr_t)buffer, count, 0, off); - - - if(ret < 0){ - return -ret; - } - - *written = ret; - return 0; -} - -int sys_pread(int fd, void *buf, size_t count, off_t off, ssize_t *bytes_read) { - int ret = syscall(SYS_PREAD, fd, (uintptr_t)buf, count, 0, off); - - if(ret < 0){ - return -ret; - } - - *bytes_read = ret; - return 0; -} - -int sys_seek(int fd, off_t offset, int whence, off_t *new_offset) { - long ret = syscall(SYS_LSEEK, fd, offset, whence); - - if(ret < 0){ - return -ret; - } - - *new_offset = ret; - return 0; -} - - -int sys_open(const char* filename, int flags, mode_t mode, int* fd){ - long ret = syscall(SYS_OPEN, (uintptr_t)filename, flags); - - if(ret < 0) - return -ret; - - *fd = ret; - - return 0; -} - -int sys_close(int fd){ - syscall(SYS_CLOSE, fd); - return 0; -} - -int sys_access(const char* filename, int mode){ - int fd; - if(int e = sys_open(filename, O_RDONLY, 0, &fd)){ - return e; - } - - sys_close(fd); - return 0; -} - -int sys_stat(fsfd_target fsfdt, int fd, const char *path, int flags, struct stat *statbuf){ - long ret = 0; - - lemon_stat_t lemonStat; - switch(fsfdt){ - case fsfd_target::fd: - ret = syscall(SYS_FSTAT, &lemonStat, fd); - break; - case fsfd_target::path: - ret = syscall(SYS_STAT, &lemonStat, path); - break; - default: - mlibc::infoLogger() << "mlibc warning: sys_stat: unsupported fsfd target" << frg::endlog; - return EINVAL; - } - - statbuf->st_dev = lemonStat.st_dev; - statbuf->st_ino = lemonStat.st_ino; - statbuf->st_mode = lemonStat.st_mode; - statbuf->st_nlink = lemonStat.st_nlink; - statbuf->st_uid = lemonStat.st_uid; - statbuf->st_gid = lemonStat.st_gid; - statbuf->st_rdev = lemonStat.st_rdev; - statbuf->st_size = lemonStat.st_size; - statbuf->st_blksize = lemonStat.st_blksize; - statbuf->st_blocks = lemonStat.st_blocks; - - return -ret; -} - -int sys_ioctl(int fd, unsigned long request, void *arg, int *result){ - long ret = syscall(SYS_IOCTL, fd, request, arg, result); - - if(ret < 0) - return -ret; - - return 0; -} - -#ifndef MLIBC_BUILDING_RTDL - -int sys_poll(struct pollfd *fds, nfds_t count, int timeout, int *num_events){ - long ret = syscall(SYS_POLL, fds, count, timeout); - - if(ret < 0){ - return -ret; - } - - *num_events = ret; - - return 0; -} - -int sys_mkdir(const char* path, mode_t){ - long ret = syscall(SYS_MKDIR, path); - - if(ret < 0){ - return -ret; - } - - return 0; -} - -int sys_rmdir(const char* path){ - long ret = syscall(SYS_RMDIR, path); - - if(ret < 0){ - return -ret; - } - - return 0; -} - -int sys_link(const char* srcpath, const char* destpath){ - long ret = syscall(SYS_LINK, srcpath, destpath); - - if(ret < 0){ - return -ret; - } - - return 0; -} - -int sys_unlinkat(int fd, const char *path, int flags) { - long ret = syscall(SYS_UNLINK, fd, path, flags); - - if(ret < 0) { - return -ret; - } - - return 0; -} - -typedef struct lemon_dirent { - uint32_t inode; // Inode number - uint32_t type; - char name[NAME_MAX]; // Filename -} lemon_dirent_t; - -int sys_read_entries(int handle, void *buffer, size_t max_size, size_t *bytes_read){ - lemon_dirent_t lemonDirent; - long ret = syscall(SYS_READDIR_NEXT, handle, &lemonDirent); - - if(!ret){ - *bytes_read = 0; - return 0; - } else if(ret > 0){ - dirent* dir = (dirent*)buffer; - strcpy(dir->d_name, lemonDirent.name); - dir->d_ino = lemonDirent.inode; - dir->d_off = 0; - dir->d_reclen = sizeof(dirent); - dir->d_type = lemonDirent.type; - - *bytes_read = sizeof(dirent); - return 0; - } else { - return -ret; - } -} - -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){ - return -syscall(SYS_RENAME, path, new_path); -} - -int sys_readlink(const char *path, void *buffer, size_t max_size, ssize_t *length){ - long ret = syscall(SYS_READLINK, path, buffer, max_size); - if(ret < 0){ - return -ret; - } - - *length = ret; - return 0; -} - -int sys_dup(int fd, int flags, int* newfd){ - int ret = syscall(SYS_DUP, fd, flags, -1); - if(ret < 0){ - return -ret; - } - - *newfd = ret; - return 0; -} - -int sys_dup2(int fd, int flags, int newfd){ - int ret = syscall(SYS_DUP, fd, flags, newfd); - if(ret < 0){ - return -ret; - } - - return 0; -} - -int sys_fcntl(int fd, int request, va_list args, int* result){ - if(request == F_DUPFD){ - return sys_dup(fd, 0, result); - } else if (request == F_DUPFD_CLOEXEC) { - return sys_dup(fd, O_CLOEXEC, result); - } else if(request == F_GETFD){ - *result = 0; - return 0; - } else if(request == F_SETFD){ - if(va_arg(args, int) & FD_CLOEXEC) { - return sys_ioctl(fd, FIOCLEX, NULL, result); - } else { - return sys_ioctl(fd, FIONCLEX, NULL, result); - } - } else if(request == F_GETFL){ - int ret = syscall(SYS_GET_FILE_STATUS_FLAGS, fd); - if(ret < 0){ - return -ret; - } - - *result = ret; - return 0; - } else if(request == F_SETFL){ - int ret = syscall(SYS_SET_FILE_STATUS_FLAGS, fd, va_arg(args, int)); - return -ret; - } else { - infoLogger() << "mlibc: sys_fcntl unsupported request (" << request << ")" << frg::endlog; - return EINVAL; - } -} - -int sys_pselect(int nfds, fd_set* readfds, fd_set* writefds, - fd_set *exceptfds, const struct timespec* timeout, const sigset_t* sigmask, int *num_events){ - int ret = syscall(SYS_SELECT, nfds, readfds, writefds, exceptfds, timeout); - if(ret < 0){ - return -ret; - } - - *num_events = ret; - return 0; -} - -int sys_chmod(const char *pathname, mode_t mode){ - int ret = syscall(SYS_CHMOD, pathname, mode); - - if(ret < 0){ - return -ret; - } - - return 0; -} - -int sys_pipe(int *fds, int flags){ - return -syscall(SYS_PIPE, fds, flags); -} - -int sys_epoll_create(int flags, int *fd) { - int ret = syscall(SYS_EPOLL_CREATE, flags); - - if(ret < 0){ - return -ret; - } - - *fd = ret; - - return 0; -} - -int sys_epoll_ctl(int epfd, int mode, int fd, struct epoll_event *ev) { - int ret = syscall(SYS_EPOLL_CTL, epfd, mode, fd, ev); - - if(ret < 0) { - return -ret; - } - - return 0; -} - -int sys_epoll_pwait(int epfd, struct epoll_event *ev, int n, - int timeout, const sigset_t *sigmask, int *raised) { - int ret = syscall(SYS_EPOLL_WAIT, epfd, ev, n, timeout, sigmask); - - if(ret < 0) { - return -ret; - } - - *raised = ret; - - return 0; -} - -int sys_ttyname(int tty, char *buf, size_t size) { - char path[PATH_MAX] = {"/dev/pts/"}; - - struct stat stat; - if(int e = sys_stat(fsfd_target::fd, tty, nullptr, 0, &stat)) { - return e; - } - - if(!S_ISCHR(stat.st_mode)) { - return ENOTTY; // Not a char device, isn't a tty - } - - if(sys_isatty(tty)) { - return ENOTTY; - } - - // Look for tty in /dev/pts - int ptDir = open("/dev/pts", O_DIRECTORY); - __ensure(ptDir >= 0); - - struct dirent dirent; - size_t direntBytesRead; - while(!sys_read_entries(ptDir, &dirent, sizeof(dirent), &direntBytesRead) && direntBytesRead) { - // Compare the inodes - if(dirent.d_ino == stat.st_ino) { - __ensure(strlen(path) + strlen(dirent.d_name) < PATH_MAX); - strcat(path, dirent.d_name); - - strncpy(buf, path, size); - return 0; - } - } - - // Could not find corresponding TTY in /dev/pts - return ENODEV; -} - -int sys_fchdir(int fd) { - return syscall(SYS_FCHDIR, fd); -} -#endif - -} |