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#include <unistd.h> #include <limits.h> #include <errno.h> long fpathconf(int fd, int name) { static const short values[] = { [_PC_LINK_MAX] = _POSIX_LINK_MAX, [_PC_MAX_CANON] = _POSIX_MAX_CANON, [_PC_MAX_INPUT] = _POSIX_MAX_INPUT, [_PC_NAME_MAX] = NAME_MAX, [_PC_PATH_MAX] = PATH_MAX, [_PC_PIPE_BUF] = PIPE_BUF, [_PC_CHOWN_RESTRICTED] = 1, [_PC_NO_TRUNC] = 1, [_PC_VDISABLE] = 0, [_PC_SYNC_IO] = 0, [_PC_ASYNC_IO] = 0, [_PC_PRIO_IO] = 0, [_PC_SOCK_MAXBUF] = -1, [_PC_FILESIZEBITS] = sizeof(off_t), [_PC_REC_INCR_XFER_SIZE] = PAGE_SIZE, [_PC_REC_MAX_XFER_SIZE] = PAGE_SIZE, [_PC_REC_MIN_XFER_SIZE] = PAGE_SIZE, [_PC_REC_XFER_ALIGN] = PAGE_SIZE, [_PC_ALLOC_SIZE_MIN] = PAGE_SIZE, [_PC_SYMLINK_MAX] = SYMLINK_MAX, [_PC_2_SYMLINKS] = 1 }; if (name > sizeof(values)/sizeof(values[0])) { errno = EINVAL; return -1; } return values[name]; } |