diff options
Diffstat (limited to 'libguile/filesys.c')
| -rw-r--r-- | libguile/filesys.c | 1278 |
1 files changed, 1278 insertions, 0 deletions
diff --git a/libguile/filesys.c b/libguile/filesys.c new file mode 100644 index 000000000..5ca9b309c --- /dev/null +++ b/libguile/filesys.c @@ -0,0 +1,1278 @@ +/* Copyright (C) 1996 Free Software Foundation, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this software; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + * As a special exception, the Free Software Foundation gives permission + * for additional uses of the text contained in its release of GUILE. + * + * The exception is that, if you link the GUILE library with other files + * to produce an executable, this does not by itself cause the + * resulting executable to be covered by the GNU General Public License. + * Your use of that executable is in no way restricted on account of + * linking the GUILE library code into it. + * + * This exception does not however invalidate any other reasons why + * the executable file might be covered by the GNU General Public License. + * + * This exception applies only to the code released by the + * Free Software Foundation under the name GUILE. If you copy + * code from other Free Software Foundation releases into a copy of + * GUILE, as the General Public License permits, the exception does + * not apply to the code that you add in this way. To avoid misleading + * anyone as to the status of such modified files, you must delete + * this exception notice from them. + * + * If you write modifications of your own for GUILE, it is your choice + * whether to permit this exception to apply to your modifications. + * If you do not wish that, delete this exception notice. + */ + +#include "_scm.h" + + +#ifdef TIME_WITH_SYS_TIME +# include <sys/time.h> +# include <time.h> +#else +# if HAVE_SYS_TIME_H +# include <sys/time.h> +# else +# include <time.h> +# endif +#endif + +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + +#ifdef HAVE_SYS_SELECT_H +#include <sys/select.h> +#endif + +#include <sys/stat.h> +#include <fcntl.h> + +#include <pwd.h> + + +#ifdef FD_SET + +#define SELECT_TYPE fd_set +#define SELECT_SET_SIZE FD_SETSIZE + +#else /* no FD_SET */ + +/* Define the macros to access a single-int bitmap of descriptors. */ +#define SELECT_SET_SIZE 32 +#define SELECT_TYPE int +#define FD_SET(n, p) (*(p) |= (1 << (n))) +#define FD_CLR(n, p) (*(p) &= ~(1 << (n))) +#define FD_ISSET(n, p) (*(p) & (1 << (n))) +#define FD_ZERO(p) (*(p) = 0) + +#endif /* no FD_SET */ + +#if HAVE_DIRENT_H +# include <dirent.h> +# define NAMLEN(dirent) strlen((dirent)->d_name) +#else +# define dirent direct +# define NAMLEN(dirent) (dirent)->d_namlen +# if HAVE_SYS_NDIR_H +# include <sys/ndir.h> +# endif +# if HAVE_SYS_DIR_H +# include <sys/dir.h> +# endif +# if HAVE_NDIR_H +# include <ndir.h> +# endif +#endif + + + +#ifdef O_CREAT +SCM_CONST_LONG (scm_O_CREAT, "O_CREAT", O_CREAT); +#endif + +#ifdef O_EXCL +SCM_CONST_LONG (scm_O_EXCL, "O_EXCL", O_EXCL); +#endif + +#ifdef O_NOCTTY +SCM_CONST_LONG (scm_O_NOCTTY, "O_NOCTTY", O_NOCTTY); +#endif + +#ifdef O_TRUNC +SCM_CONST_LONG (scm_O_TRUNC, "O_TRUNC", O_TRUNC); +#endif + +#ifdef O_APPEND +SCM_CONST_LONG (scm_O_APPEND, "O_APPEND", O_APPEND); +#endif + +#ifdef O_NONBLOCK +SCM_CONST_LONG (scm_O_NONBLOCK, "O_NONBLOCK", O_NONBLOCK); +#endif + +#ifdef O_NDELAY +SCM_CONST_LONG (scm_O_NDELAY, "O_NDELAY", O_NDELAY); +#endif + +#ifdef O_SYNC +SCM_CONST_LONG (scm_O_SYNC, "O_SYNC", O_SYNC); +#endif + + + + + +/* {Permissions} + */ + +SCM_PROC (s_sys_chown, "%chown", 3, 0, 0, scm_sys_chown); +#ifdef __STDC__ +SCM +scm_sys_chown (SCM path, SCM owner, SCM group) +#else +SCM +scm_sys_chown (path, owner, group) + SCM path; + SCM owner; + SCM group; +#endif +{ + int val; + SCM_ASSERT (SCM_NIMP (path) && SCM_ROSTRINGP (path), path, SCM_ARG1, s_sys_chown); + if (SCM_SUBSTRP (path)) + path = scm_makfromstr (SCM_ROCHARS (path), SCM_ROLENGTH (path), 0); + SCM_ASSERT (SCM_INUMP (owner), owner, SCM_ARG2, s_sys_chown); + SCM_ASSERT (SCM_INUMP (group), group, SCM_ARG3, s_sys_chown); + SCM_SYSCALL (val = chown (SCM_ROCHARS (path), SCM_INUM (owner), SCM_INUM (group))); + return val ? SCM_MAKINUM (errno) : SCM_BOOL_T; +} + + +SCM_PROC (s_sys_chmod, "%chmod", 2, 0, 0, scm_sys_chmod); +#ifdef __STDC__ +SCM +scm_sys_chmod (SCM port_or_path, SCM mode) +#else +SCM +scm_sys_chmod (port_or_path, mode) + SCM port_or_path; + SCM mode; +#endif +{ + int rv; + SCM_ASSERT (SCM_INUMP (mode), mode, SCM_ARG2, s_sys_chmod); + SCM_ASSERT (SCM_NIMP (port_or_path), port_or_path, SCM_ARG1, s_sys_chmod); + if (SCM_STRINGP (port_or_path)) + SCM_SYSCALL (rv = chmod (SCM_CHARS (port_or_path), SCM_INUM (mode))); + else + { + SCM_ASSERT (SCM_OPFPORTP (port_or_path), port_or_path, SCM_ARG1, s_sys_chmod); + rv = fileno ((FILE *)SCM_STREAM (port_or_path)); + if (rv != -1) + SCM_SYSCALL (rv = fchmod (rv, SCM_INUM (mode))); + } + return rv ? SCM_MAKINUM (errno) : SCM_BOOL_T; +} + +SCM_PROC (s_umask, "umask", 0, 1, 0, scm_umask); +#ifdef __STDC__ +SCM +scm_umask (SCM mode) +#else +SCM +scm_umask (mode) + SCM mode; +#endif +{ + mode_t mask; + if (SCM_UNBNDP (mode)) + { + mask = umask (0); + umask (mask); + } + else + { + SCM_ASSERT (SCM_INUMP (mode), mode, SCM_ARG1, s_umask); + mask = umask (SCM_INUM (mode)); + } + return SCM_MAKINUM (mask); +} + + +/* {File Descriptors} + */ +long scm_tc16_fd; + +#ifdef __STDC__ +static int +scm_fd_print (SCM sexp, SCM port, int writing) +#else +static int +scm_fd_print (sexp, port, writing) + SCM sexp; + SCM port; + int writing; +#endif +{ + scm_gen_puts (scm_regular_string, "#<fd ", port); + scm_intprint (SCM_CDR (sexp), 10, port); + scm_gen_puts (scm_regular_string, ">", port); + return 1; +} + +#ifdef __STDC__ +static scm_sizet +scm_fd_free (SCM p) +#else +static scm_sizet +scm_fd_free (p) + SCM p; +#endif +{ + SCM flags; + + flags = SCM_FD_FLAGS (p); + if ((scm_close_fd_on_gc & flags) && (scm_fd_is_open & flags)) + { + SCM_SYSCALL( close (SCM_FD (p)) ); + } + return 0; +} + +static scm_smobfuns fd_smob = {scm_mark0, scm_fd_free, scm_fd_print, 0}; + +#ifdef __STDC__ +SCM +scm_intern_fd (int fd, int flags) +#else +SCM +scm_intern_fd (fd, flags) + int fd; + int flags; +#endif +{ + SCM it; + SCM_NEWCELL (it); + SCM_REDEFER_INTS; + SCM_SETCAR (it, (scm_tc16_fd | (flags << 16))); + SCM_SETCDR (it, (SCM)fd); + SCM_REALLOW_INTS; + return it; +} + + + +SCM_PROC (s_sys_open, "%open", 3, 0, 0, scm_sys_open); +#ifdef __STDC__ +SCM +scm_sys_open (SCM path, SCM flags, SCM mode) +#else +SCM +scm_sys_open (path, flags, mode) + SCM path; + SCM flags; + SCM mode; +#endif +{ + int fd; + SCM sfd; + + SCM_ASSERT (SCM_NIMP (path) && SCM_ROSTRINGP (path), path, SCM_ARG1, s_sys_open); + SCM_ASSERT (SCM_INUMP (flags), flags, SCM_ARG2, s_sys_open); + SCM_ASSERT (SCM_INUMP (mode), mode, SCM_ARG3, s_sys_open); + + if (SCM_SUBSTRP (path)) + path = scm_makfromstr (SCM_ROCHARS (path), SCM_ROLENGTH (path), 0); + + SCM_DEFER_INTS; + SCM_SYSCALL ( fd = open (SCM_ROCHARS (path), SCM_INUM (flags), SCM_INUM (mode)) ); + if (fd == -1) + sfd = SCM_MAKINUM (errno); + else + sfd = scm_intern_fd (fd, scm_fd_is_open | scm_close_fd_on_gc); + SCM_ALLOW_INTS; + + return scm_return_first (sfd, path); +} + + +SCM_PROC (s_sys_create, "%create", 2, 0, 0, scm_sys_create); +#ifdef __STDC__ +SCM +scm_sys_create (SCM path, SCM mode) +#else +SCM +scm_sys_create (path, mode) + SCM path; + SCM mode; +#endif +{ + int fd; + SCM sfd; + + SCM_ASSERT (SCM_NIMP (path) && SCM_ROSTRINGP (path), path, SCM_ARG1, s_sys_create); + SCM_ASSERT (SCM_INUMP (mode), mode, SCM_ARG2, s_sys_create); + + if (SCM_SUBSTRP (path)) + path = scm_makfromstr (SCM_ROCHARS (path), SCM_ROLENGTH (path), 0); + + SCM_DEFER_INTS; + SCM_SYSCALL ( fd = creat (SCM_ROCHARS (path), SCM_INUM (mode)) ); + if (fd == -1) + sfd = SCM_MAKINUM (errno); + else + sfd = scm_intern_fd (fd, scm_fd_is_open | scm_close_fd_on_gc); + SCM_ALLOW_INTS; + + return scm_return_first (sfd, path); +} + + +SCM_PROC (s_sys_close, "%close", 1, 0, 0, scm_sys_close); +#ifdef __STDC__ +SCM +scm_sys_close (SCM sfd) +#else +SCM +scm_sys_close (sfd) + SCM sfd; +#endif +{ + int fd; + int got; + SCM_ASSERT (SCM_NIMP (sfd) && SCM_FD_P (sfd), sfd, SCM_ARG1, s_sys_close); + fd = SCM_FD (sfd); + + SCM_DEFER_INTS; + got = close (fd); + SCM_SETCAR (sfd, scm_tc16_fd); + SCM_ALLOW_INTS; + return (got == -1 ? SCM_MAKINUM (errno) : SCM_BOOL_T); +} + + +SCM_PROC (s_sys_write_fd, "%write-fd", 2, 0, 0, scm_sys_write_fd); +#ifdef __STDC__ +SCM +scm_sys_write_fd (SCM sfd, SCM buf) +#else +SCM +scm_sys_write_fd (sfd, buf) + SCM sfd; + SCM buf; +#endif +{ + SCM answer; + int fd; + size_t written; + SCM_ASSERT (SCM_NIMP (sfd) && SCM_FD_P (sfd), sfd, SCM_ARG1, s_sys_write_fd); + SCM_ASSERT (SCM_NIMP (buf) && SCM_ROSTRINGP (buf), buf, SCM_ARG2, s_sys_write_fd); + fd = SCM_FD (sfd); + SCM_DEFER_INTS; + written = write (fd, SCM_ROCHARS (buf), SCM_ROLENGTH (buf)); + if (written == -1) + answer = scm_cons (SCM_MAKINUM (errno), SCM_EOL); + else + answer = scm_long2num (written); + SCM_ALLOW_INTS; + return scm_return_first (answer, buf); +} + + +SCM_PROC (s_sys_read_fd, "%read-fd", 2, 2, 0, scm_sys_read_fd); +#ifdef __STDC__ +SCM +scm_sys_read_fd (SCM sfd, SCM buf, SCM offset, SCM length) +#else +SCM +scm_sys_read_fd (sfd, buf, offset, length) + SCM sfd; + SCM buf; + SCM offset; + SCM length; +#endif +{ + SCM answer; + int fd; + char * bytes; + int off; + int len; + size_t got; + + SCM_ASSERT (SCM_NIMP (sfd) && SCM_FD_P (sfd), sfd, SCM_ARG1, s_sys_read_fd); + fd = SCM_FD (sfd); + + SCM_ASSERT (SCM_NIMP (buf) && SCM_STRINGP (buf), buf, SCM_ARG2, s_sys_read_fd); + bytes = SCM_CHARS (buf); + + if (SCM_UNBNDP (offset)) + off = 0; + else + { + SCM_ASSERT (SCM_INUMP (offset), offset, SCM_ARG3, s_sys_read_fd); + off = SCM_INUM (offset); + } + + if (SCM_UNBNDP (length)) + len = SCM_LENGTH (buf); + else + { + SCM_ASSERT (SCM_INUMP (length), length, SCM_ARG3, s_sys_read_fd); + len = SCM_INUM (length); + } + + SCM_DEFER_INTS; + got = read (fd, bytes + off, len); + if (got == -1) + answer = scm_cons (SCM_MAKINUM (errno), SCM_EOL); + else + answer = scm_long2num (got); + SCM_ALLOW_INTS; + return scm_return_first (answer, buf); +} + +SCM_PROC (s_sys_lseek, "%lseek", 2, 1, 0, scm_sys_lseek); +#ifdef __STDC__ +SCM +scm_sys_lseek (SCM sfd, SCM offset, SCM whence) +#else +SCM +scm_sys_lseek (sfd, offset, whence) + SCM sfd; + SCM offset; + SCM whence; +#endif +{ + SCM answer; + int fd; + long off; + int wh; + long got; + + SCM_ASSERT (SCM_NIMP (sfd) && SCM_FD_P (sfd), sfd, SCM_ARG1, s_sys_lseek); + fd = SCM_FD (sfd); + + off = scm_num2long (offset, (char *)SCM_ARG2, s_sys_lseek); + if (SCM_UNBNDP (whence)) + wh = SEEK_SET; + else + { + SCM_ASSERT (SCM_INUMP (whence), whence, SCM_ARG3, s_sys_lseek); + wh = SCM_INUM (whence); + } + + SCM_DEFER_INTS; + SCM_SYSCALL (got = lseek (fd, off, wh)); + if (got == -1) + answer = SCM_MAKINUM (errno); + else + answer = scm_long2num (got); + SCM_ALLOW_INTS; + return answer; +} + + +SCM_PROC (s_sys_dup, "%dup", 1, 1, 0, scm_sys_dup); +#ifdef __STDC__ +SCM +scm_sys_dup (SCM oldfd, SCM newfd) +#else +SCM +scm_sys_dup (oldfd, newfd) + SCM oldfd; + SCM newfd; +#endif +{ + SCM answer; + int fd; + int nfd; + int (*fn)(); + + SCM_ASSERT (SCM_NIMP (oldfd) && SCM_FD_P (oldfd), oldfd, SCM_ARG1, s_sys_dup); + SCM_ASSERT (SCM_UNBNDP (newfd) || SCM_INUMP (newfd), newfd, SCM_ARG2, s_sys_dup); + fd = SCM_FD (oldfd); + nfd = (SCM_INUMP (newfd) ? SCM_INUM (newfd) : -1); + + SCM_DEFER_INTS; + fn = ((nfd == -1) ? (int (*)())dup : (int (*)())dup2); + nfd = fn (fd, nfd); + answer = (nfd == -1 + ? scm_cons (SCM_MAKINUM (errno), SCM_EOL) + : SCM_MAKINUM (nfd)); + SCM_ALLOW_INTS; + return answer; +} + + + +/* {Files} + */ +#ifdef __STDC__ +static SCM +scm_stat2scm (struct stat *stat_temp) +#else +static SCM +scm_stat2scm (stat_temp) + struct stat *stat_temp; +#endif +{ + SCM ans = scm_make_vector (SCM_MAKINUM (13), SCM_UNSPECIFIED, SCM_BOOL_F); + SCM *ve = SCM_VELTS (ans); + ve[0] = scm_ulong2num ((unsigned long) stat_temp->st_dev); + ve[1] = scm_ulong2num ((unsigned long) stat_temp->st_ino); + ve[2] = scm_ulong2num ((unsigned long) stat_temp->st_mode); + ve[3] = scm_ulong2num ((unsigned long) stat_temp->st_nlink); + ve[4] = scm_ulong2num ((unsigned long) stat_temp->st_uid); + ve[5] = scm_ulong2num ((unsigned long) stat_temp->st_gid); +#ifdef HAVE_ST_RDEV + ve[6] = scm_ulong2num ((unsigned long) stat_temp->st_rdev); +#else + ve[6] = SCM_BOOL_F; +#endif + ve[7] = scm_ulong2num ((unsigned long) stat_temp->st_size); + ve[8] = scm_ulong2num ((unsigned long) stat_temp->st_atime); + ve[9] = scm_ulong2num ((unsigned long) stat_temp->st_mtime); + ve[10] = scm_ulong2num ((unsigned long) stat_temp->st_ctime); +#ifdef HAVE_ST_BLKSIZE + ve[11] = scm_ulong2num ((unsigned long) stat_temp->st_blksize); +#else + ve[11] = scm_ulong2num (4096L); +#endif +#ifdef HAVE_ST_BLOCKS + ve[12] = scm_ulong2num ((unsigned long) stat_temp->st_blocks); +#else + ve[12] = SCM_BOOL_F; +#endif + + return ans; +} + +SCM_PROC (s_sys_stat, "%stat", 1, 0, 0, scm_sys_stat); +#ifdef __STDC__ +SCM +scm_sys_stat (SCM fd_or_path) +#else +SCM +scm_sys_stat (fd_or_path) + SCM fd_or_path; +#endif +{ + int rv; + struct stat stat_temp; + + if (SCM_INUMP (fd_or_path)) + { + SCM_ASSERT (SCM_OPFPORTP (fd_or_path), fd_or_path, SCM_ARG1, s_sys_stat); + rv = SCM_INUM (fd_or_path); + SCM_SYSCALL (rv = fstat (rv, &stat_temp)); + } + else if (SCM_NIMP (fd_or_path) && SCM_FD_P (fd_or_path)) + { + rv = SCM_FD (fd_or_path); + SCM_SYSCALL (rv = fstat (rv, &stat_temp)); + } + else + { + SCM_ASSERT (SCM_NIMP (fd_or_path), fd_or_path, SCM_ARG1, s_sys_stat); + SCM_ASSERT (SCM_ROSTRINGP (fd_or_path), fd_or_path, SCM_ARG1, s_sys_stat); + if (SCM_ROSTRINGP (fd_or_path)) + { + if (SCM_SUBSTRP (fd_or_path)) + fd_or_path = scm_makfromstr (SCM_ROCHARS (fd_or_path), SCM_ROLENGTH (fd_or_path), 0); + SCM_SYSCALL (rv = stat (SCM_CHARS (fd_or_path), &stat_temp)); + } + + } + return rv ? SCM_MAKINUM (errno) : scm_stat2scm (&stat_temp); +} + + + +/* {Modifying Directories} + */ + +SCM_PROC (s_sys_link, "%link", 2, 0, 0, scm_sys_link); +#ifdef __STDC__ +SCM +scm_sys_link (SCM oldpath, SCM newpath) +#else +SCM +scm_sys_link (oldpath, newpath) + SCM oldpath; + SCM newpath; +#endif +{ + int val; + SCM_ASSERT (SCM_NIMP (oldpath) && SCM_ROSTRINGP (oldpath), oldpath, SCM_ARG1, s_sys_link); + if (SCM_SUBSTRP (oldpath)) + oldpath = scm_makfromstr (SCM_ROCHARS (oldpath), SCM_ROLENGTH (oldpath), 0); + SCM_ASSERT (SCM_NIMP (newpath) && SCM_ROSTRINGP (newpath), newpath, SCM_ARG2, s_sys_link); + if (SCM_SUBSTRP (newpath)) + newpath = scm_makfromstr (SCM_ROCHARS (newpath), SCM_ROLENGTH (newpath), 0); + SCM_SYSCALL (val = link (SCM_ROCHARS (oldpath), SCM_ROCHARS (newpath))); + return val ? SCM_MAKINUM (errno) : SCM_BOOL_T; +} + + + +SCM_PROC (s_sys_rename, "%rename-file", 2, 0, 0, scm_sys_rename); +#ifdef __STDC__ +SCM +scm_sys_rename (SCM oldname, SCM newname) +#else +SCM +scm_sys_rename (oldname, newname) + SCM oldname; + SCM newname; +#endif +{ + int rv; + SCM_ASSERT (SCM_NIMP (oldname) && SCM_STRINGP (oldname), oldname, SCM_ARG1, s_sys_rename); + SCM_ASSERT (SCM_NIMP (newname) && SCM_STRINGP (newname), newname, SCM_ARG2, s_sys_rename); +#ifdef HAVE_RENAME + SCM_SYSCALL (rv = rename (SCM_CHARS (oldname), SCM_CHARS (newname))); + return rv ? SCM_MAKINUM (errno) : SCM_BOOL_T; +#else + SCM_DEFER_INTS; + SCM_SYSCALL (rv = link (SCM_CHARS (oldname), SCM_CHARS (newname))); + if (!rv) + { + SCM_SYSCALL (rv = unlink (SCM_CHARS (oldname)));; + if (rv) + /* unlink failed. remove new name */ + SCM_SYSCALL (unlink (SCM_CHARS (newname))); + } + SCM_ALLOW_INTS; + return rv ? SCM_MAKINUM (errno) : SCM_BOOL_T; +#endif +} + + + +SCM_PROC (s_sys_mkdir, "%mkdir", 1, 1, 0, scm_sys_mkdir); +#ifdef __STDC__ +SCM +scm_sys_mkdir (SCM path, SCM mode) +#else +SCM +scm_sys_mkdir (path, mode) + SCM path; + SCM mode; +#endif +{ +#ifdef HAVE_MKDIR + int rv; + mode_t mask; + SCM_ASSERT (SCM_NIMP (path) && SCM_STRINGP (path), path, SCM_ARG1, s_sys_mkdir); + if (SCM_UNBNDP (mode)) + { + mask = umask (0); + umask (mask); + SCM_SYSCALL (rv = mkdir (SCM_CHARS (path), 0777 ^ mask)); + } + else + { + SCM_ASSERT (SCM_INUMP (mode), mode, SCM_ARG2, s_sys_mkdir); + SCM_SYSCALL (rv = mkdir (SCM_CHARS (path), SCM_INUM (mode))); + } + return rv ? SCM_MAKINUM (errno) : SCM_BOOL_T; +#else + return SCM_MAKINUM (ENOSYS); +#endif +} + + +SCM_PROC (s_sys_rmdir, "%rmdir", 1, 0, 0, scm_sys_rmdir); +#ifdef __STDC__ +SCM +scm_sys_rmdir (SCM path) +#else +SCM +scm_sys_rmdir (path) + SCM path; +#endif +{ +#ifdef HAVE_RMDIR + int val; + SCM_ASSERT (SCM_NIMP (path) && SCM_STRINGP (path), path, SCM_ARG1, s_sys_rmdir); + SCM_SYSCALL (val = rmdir (SCM_CHARS (path))); + return val ? SCM_MAKINUM (errno) : SCM_BOOL_T; +#else + return SCM_MAKINUM (ENOSYS); +#endif +} + + +/* {Examining Directories} + */ + +long scm_tc16_dir; + +SCM_PROC (s_sys_opendir, "%opendir", 1, 0, 0, scm_sys_opendir); +#ifdef __STDC__ +SCM +scm_sys_opendir (SCM dirname) +#else +SCM +scm_sys_opendir (dirname) + SCM dirname; +#endif +{ + DIR *ds; + SCM dir; + SCM_ASSERT (SCM_NIMP (dirname) && SCM_STRINGP (dirname), dirname, SCM_ARG1, s_sys_opendir); + SCM_NEWCELL (dir); + SCM_DEFER_INTS; + SCM_SYSCALL (ds = opendir (SCM_CHARS (dirname))); + if (!ds) + { + SCM_ALLOW_INTS; + return SCM_MAKINUM (errno); + } + SCM_CAR (dir) = scm_tc16_dir | SCM_OPN; + SCM_SETCDR (dir, ds); + SCM_ALLOW_INTS; + return dir; +} + + +SCM_PROC (s_sys_readdir, "%readdir", 1, 0, 0, scm_sys_readdir); +#ifdef __STDC__ +SCM +scm_sys_readdir (SCM port) +#else +SCM +scm_sys_readdir (port) + SCM port; +#endif +{ + struct dirent *rdent; + SCM_DEFER_INTS; + SCM_ASSERT (SCM_NIMP (port) && SCM_OPDIRP (port), port, SCM_ARG1, s_sys_readdir); + errno = 0; + SCM_SYSCALL (rdent = readdir ((DIR *) SCM_CDR (port))); + SCM_ALLOW_INTS; + return (rdent + ? scm_makfromstr (rdent->d_name, NAMLEN (rdent), 0) + : (errno ? SCM_MAKINUM (errno) : SCM_EOF_VAL)); +} + + + +SCM_PROC (s_rewinddir, "rewinddir", 1, 0, 0, scm_rewinddir); +#ifdef __STDC__ +SCM +scm_rewinddir (SCM port) +#else +SCM +scm_rewinddir (port) + SCM port; +#endif +{ + SCM_ASSERT (SCM_NIMP (port) && SCM_OPDIRP (port), port, SCM_ARG1, s_rewinddir); + rewinddir ((DIR *) SCM_CDR (port)); + return SCM_UNSPECIFIED; +} + + + +SCM_PROC (s_sys_closedir, "%closedir", 1, 0, 0, scm_sys_closedir); +#ifdef __STDC__ +SCM +scm_sys_closedir (SCM port) +#else +SCM +scm_sys_closedir (port) + SCM port; +#endif +{ + int sts; + SCM_ASSERT (SCM_NIMP (port) && SCM_DIRP (port), port, SCM_ARG1, s_sys_closedir); + SCM_DEFER_INTS; + if (SCM_CLOSEDP (port)) + { + SCM_ALLOW_INTS; + return SCM_MAKINUM (errno); + } + SCM_SYSCALL (sts = closedir ((DIR *) SCM_CDR (port))); + if (sts) + { + SCM_ALLOW_INTS; + return SCM_MAKINUM (errno); + } + SCM_CAR (port) = scm_tc16_dir; + SCM_ALLOW_INTS; + return SCM_BOOL_T; +} + + + +#ifdef __STDC__ +static int +scm_dir_print (SCM sexp, SCM port, int writing) +#else +static int +scm_dir_print (sexp, port, writing) + SCM sexp; + SCM port; + int writing; +#endif +{ + scm_prinport (sexp, port, "directory"); + return 1; +} + +#ifdef __STDC__ +static scm_sizet +scm_dir_free (SCM p) +#else +static scm_sizet +scm_dir_free (p) + SCM p; +#endif +{ + if (SCM_OPENP (p)) + closedir ((DIR *) SCM_CDR (p)); + return 0; +} + +static scm_smobfuns dir_smob = {scm_mark0, scm_dir_free, scm_dir_print, 0}; + + +/* {Navigating Directories} + */ + + +SCM_PROC (s_sys_chdir, "%chdir", 1, 0, 0, scm_sys_chdir); +#ifdef __STDC__ +SCM +scm_sys_chdir (SCM str) +#else +SCM +scm_sys_chdir (str) + SCM str; +#endif +{ + int ans; + SCM_ASSERT (SCM_NIMP (str) && SCM_STRINGP (str), str, SCM_ARG1, s_sys_chdir); + SCM_SYSCALL (ans = chdir (SCM_CHARS (str))); + return ans ? SCM_MAKINUM (errno) : SCM_BOOL_T; +} + + + +SCM_PROC (s_sys_getcwd, "%getcwd", 0, 0, 0, scm_sys_getcwd); +#ifdef __STDC__ +SCM +scm_sys_getcwd (void) +#else +SCM +scm_sys_getcwd () +#endif +{ +#ifdef HAVE_GETCWD + char *rv; + + scm_sizet size = 100; + char *wd; + SCM result; + + SCM_DEFER_INTS; + wd = scm_must_malloc (size, s_sys_getcwd); + while ((rv = getcwd (wd, size)) == 0 && errno == ERANGE) + { + scm_must_free (wd); + size *= 2; + wd = scm_must_malloc (size, s_sys_getcwd); + } + if (rv != 0) + result = scm_makfromstr (wd, strlen (wd), 0); + else + result = SCM_MAKINUM (errno); + scm_must_free (wd); + SCM_ALLOW_INTS; + return result; +#else + return SCM_MAKINUM (ENOSYS); +#endif +} + + + +#ifdef __STDC__ +static void +fill_select_type (SELECT_TYPE * set, SCM list) +#else +static void +fill_select_type (set, list) + SELECT_TYPE * set; + SCM list; +#endif +{ + while (list != SCM_EOL) + { + if ( SCM_NIMP (SCM_CAR (list)) + && (scm_tc16_fport == SCM_TYP16 (SCM_CAR (list))) + && SCM_OPPORTP (SCM_CAR (list))) + FD_SET (fileno ((FILE *)SCM_STREAM (SCM_CAR (list))), set); + else if (SCM_INUMP (SCM_CAR (list))) + FD_SET (SCM_INUM (SCM_CAR (list)), set); + else if (SCM_NIMP (SCM_CAR (list)) && SCM_FD_P (SCM_CAR (list))) + FD_SET (SCM_FD (SCM_CAR (list)), set); + list = SCM_CDR (list); + } +} + +#ifdef __STDC__ +static SCM +retrieve_select_type (SELECT_TYPE * set, SCM list) +#else +static SCM +retrieve_select_type (set, list) + SELECT_TYPE * set; + SCM list; +#endif +{ + SCM answer; + answer = SCM_EOL; + while (list != SCM_EOL) + { + if ( SCM_NIMP (SCM_CAR (list)) + && (scm_tc16_fport == SCM_TYP16 (SCM_CAR (list))) + && SCM_OPPORTP (SCM_CAR (list))) + { + if (FD_ISSET (fileno ((FILE *)SCM_STREAM (SCM_CAR (list))), set)) + answer = scm_cons (SCM_CAR (list), answer); + } + else if (SCM_INUMP (SCM_CAR (list))) + { + if (FD_ISSET (SCM_INUM (SCM_CAR (list)), set)) + answer = scm_cons (SCM_CAR (list), answer); + } + else if (SCM_NIMP (SCM_CAR (list)) && SCM_FD_P (SCM_CAR (list))) + { + if (FD_ISSET (SCM_FD (SCM_CAR (list)), set)) + answer = scm_cons (SCM_CAR (list), answer); + } + list = SCM_CDR (list); + } + return answer; +} + + +SCM_PROC (s_sys_select, "%select", 3, 2, 0, scm_sys_select); +#ifdef __STDC__ +SCM +scm_sys_select (SCM reads, SCM writes, SCM excepts, SCM secs, SCM msecs) +#else +SCM +scm_sys_select (reads, writes, excepts, secs, msecs) + SCM reads; + SCM writes; + SCM excepts; + SCM secs; + SCM msecs; +#endif +{ +#ifdef HAVE_SELECT + struct timeval timeout; + struct timeval * time_p; + SELECT_TYPE read_set; + SELECT_TYPE write_set; + SELECT_TYPE except_set; + int sreturn; + + SCM_ASSERT (-1 < scm_ilength (reads), reads, SCM_ARG1, s_sys_select); + SCM_ASSERT (-1 < scm_ilength (writes), reads, SCM_ARG1, s_sys_select); + SCM_ASSERT (-1 < scm_ilength (excepts), reads, SCM_ARG1, s_sys_select); + + FD_ZERO (&read_set); + FD_ZERO (&write_set); + FD_ZERO (&except_set); + + fill_select_type (&read_set, reads); + fill_select_type (&write_set, writes); + fill_select_type (&except_set, excepts); + + if (SCM_UNBNDP (secs)) + time_p = 0; + else + { + SCM_ASSERT (SCM_INUMP (secs), secs, SCM_ARG4, s_sys_select); + if (SCM_UNBNDP (msecs)) + msecs = SCM_INUM0; + else + SCM_ASSERT (SCM_INUMP (msecs), msecs, SCM_ARG5, s_sys_select); + + timeout.tv_sec = SCM_INUM (secs); + timeout.tv_usec = 1000 * SCM_INUM (msecs); + time_p = &timeout; + } + + SCM_DEFER_INTS; + sreturn = select (SELECT_SET_SIZE, + &read_set, &write_set, &except_set, time_p); + SCM_ALLOW_INTS; + if (sreturn < 0) + return SCM_MAKINUM (errno); + else + return scm_listify (retrieve_select_type (&read_set, reads), + retrieve_select_type (&write_set, writes), + retrieve_select_type (&except_set, excepts), + SCM_UNDEFINED); +#else + return SCM_MAKINUM (ENOSYS); +#endif +} + + +/* {Symbolic Links} + */ + +SCM_PROC (s_sys_symlink, "%symlink", 2, 0, 0, scm_sys_symlink); +#ifdef __STDC__ +SCM +scm_sys_symlink(SCM oldpath, SCM newpath) +#else +SCM +scm_sys_symlink(oldpath, newpath) + SCM oldpath; + SCM newpath; +#endif +{ +#ifdef HAVE_SYMLINK + int val; + SCM_ASSERT(SCM_NIMP(oldpath) && SCM_STRINGP(oldpath), oldpath, SCM_ARG1, s_sys_symlink); + SCM_ASSERT(SCM_NIMP(newpath) && SCM_STRINGP(newpath), newpath, SCM_ARG2, s_sys_symlink); + SCM_SYSCALL(val = symlink(SCM_CHARS(oldpath), SCM_CHARS(newpath))); + return val ? SCM_MAKINUM (errno) : SCM_BOOL_T; +#else + return SCM_MAKINUM (ENOSYS); +#endif +} + + +SCM_PROC (s_sys_readlink, "%readlink", 1, 0, 0, scm_sys_readlink); +#ifdef __STDC__ +SCM +scm_sys_readlink(SCM path) +#else +SCM +scm_sys_readlink(path) + SCM path; +#endif +{ +#ifdef HAVE_READLINK + scm_sizet rv; + scm_sizet size = 100; + char *buf; + SCM result; + SCM_ASSERT (SCM_NIMP (path) && SCM_STRINGP (path), path, (char *) SCM_ARG1, s_sys_readlink); + SCM_DEFER_INTS; + buf = scm_must_malloc (size, s_sys_readlink); + while ((rv = readlink (SCM_CHARS (path), buf, (scm_sizet) size)) == size) + { + scm_must_free (buf); + size *= 2; + buf = scm_must_malloc (size, s_sys_readlink); + } + if (rv != -1) + result = scm_makfromstr (buf, rv, 0); + else + result = SCM_MAKINUM (errno); + scm_must_free (buf); + SCM_ALLOW_INTS; + return result; +#else + return SCM_MAKINUM (ENOSYS); +#endif +} + + +SCM_PROC (s_sys_lstat, "%lstat", 1, 0, 0, scm_sys_lstat); +#ifdef __STDC__ +SCM +scm_sys_lstat(SCM str) +#else +SCM +scm_sys_lstat(str) + SCM str; +#endif +{ +#ifdef HAVE_LSTATE + int i; + struct stat stat_temp; + SCM_ASSERT(SCM_NIMP(str) && SCM_STRINGP(str), str, (char *)SCM_ARG1, s_sys_lstat); + SCM_SYSCALL(i = lstat(SCM_CHARS(str), &stat_temp)); + return i ? SCM_MAKINUM (errno) : scm_stat2scm(&stat_temp); +#else + return SCM_MAKINUM (ENOSYS); +#endif +} + + +SCM_PROC (s_sys_copy_file, "%copy-file", 2, 0, 0, scm_sys_copy_file); +#ifdef __STDC__ +SCM +scm_sys_copy_file (SCM oldfile, SCM newfile) +#else +SCM +scm_sys_copy_file (oldfile, newfile) + SCM oldfile; + SCM newfile; +#endif +{ + int oldfd, newfd; + int n; + char buf[BUFSIZ]; /* this space could be shared. */ + struct stat oldstat; + + SCM_ASSERT (SCM_NIMP (oldfile) && SCM_ROSTRINGP (oldfile), oldfile, SCM_ARG1, s_sys_copy_file); + if (SCM_SUBSTRP (oldfile)) + oldfile = scm_makfromstr (SCM_ROCHARS (oldfile), SCM_ROLENGTH (oldfile), 0); + SCM_ASSERT (SCM_NIMP (newfile) && SCM_ROSTRINGP (newfile), newfile, SCM_ARG2, s_sys_copy_file); + if (SCM_SUBSTRP (newfile)) + newfile = scm_makfromstr (SCM_ROCHARS (newfile), SCM_ROLENGTH (newfile), 0); + if (stat (SCM_ROCHARS (oldfile), &oldstat) == -1) + return SCM_BOOL_F; + SCM_DEFER_INTS; + oldfd = open (SCM_ROCHARS (oldfile), O_RDONLY); + if (oldfd == -1) + { + SCM_ALLOW_INTS; + return SCM_BOOL_F; + } + /* should probably use the POSIX flags instead of 07777. */ + newfd = open (SCM_ROCHARS (newfile), O_WRONLY | O_CREAT | O_TRUNC, + oldstat.st_mode & 07777); + if (newfd == -1) + { + close (oldfd); + SCM_ALLOW_INTS; + return SCM_BOOL_F; + } + while ((n = read (oldfd, buf, sizeof buf)) > 0) + if (write (newfd, buf, n) != n) + { + close (oldfd); + close (newfd); + SCM_ALLOW_INTS; + return SCM_BOOL_F; + } + close (oldfd); + if (close (newfd) == -1) + { + SCM_ALLOW_INTS; + return SCM_BOOL_F; + } + SCM_ALLOW_INTS; + return SCM_BOOL_T; +} + + +#ifdef __STDC__ +void +scm_init_filesys (void) +#else +void +scm_init_filesys () +#endif +{ + /* File type/permission bits. */ +#ifdef S_IRUSR + scm_sysintern ("S_IRUSR", SCM_MAKINUM (S_IRUSR)); +#endif +#ifdef S_IWUSR + scm_sysintern ("S_IWUSR", SCM_MAKINUM (S_IWUSR)); +#endif +#ifdef S_IXUSR + scm_sysintern ("S_IXUSR", SCM_MAKINUM (S_IXUSR)); +#endif +#ifdef S_IRWXU + scm_sysintern ("S_IRWXU", SCM_MAKINUM (S_IRWXU)); +#endif + +#ifdef S_IRGRP + scm_sysintern ("S_IRGRP", SCM_MAKINUM (S_IRGRP)); +#endif +#ifdef S_IWGRP + scm_sysintern ("S_IWGRP", SCM_MAKINUM (S_IWGRP)); +#endif +#ifdef S_IXGRP + scm_sysintern ("S_IXGRP", SCM_MAKINUM (S_IXGRP)); +#endif +#ifdef S_IRWXG + scm_sysintern ("S_IRWXG", SCM_MAKINUM (S_IRWXG)); +#endif + +#ifdef S_IROTH + scm_sysintern ("S_IROTH", SCM_MAKINUM (S_IROTH)); +#endif +#ifdef S_IWOTH + scm_sysintern ("S_IWOTH", SCM_MAKINUM (S_IWOTH)); +#endif +#ifdef S_IXOTH + scm_sysintern ("S_IXOTH", SCM_MAKINUM (S_IXOTH)); +#endif +#ifdef S_IRWXO + scm_sysintern ("S_IRWXO", SCM_MAKINUM (S_IRWXO)); +#endif + +#ifdef S_ISUID + scm_sysintern ("S_ISUID", SCM_MAKINUM (S_ISUID)); +#endif +#ifdef S_ISGID + scm_sysintern ("S_ISGID", SCM_MAKINUM (S_ISGID)); +#endif +#ifdef S_ISVTX + scm_sysintern ("S_ISVTX", SCM_MAKINUM (S_ISVTX)); +#endif + +#ifdef S_IFMT + scm_sysintern ("S_IFMT", SCM_MAKINUM (S_IFMT)); +#endif +#ifdef S_IFDIR + scm_sysintern ("S_IFDIR", SCM_MAKINUM (S_IFDIR)); +#endif +#ifdef S_IFCHR + scm_sysintern ("S_IFCHR", SCM_MAKINUM (S_IFCHR)); +#endif +#ifdef S_IFBLK + scm_sysintern ("S_IFBLK", SCM_MAKINUM (S_IFBLK)); +#endif +#ifdef S_IFREG + scm_sysintern ("S_IFREG", SCM_MAKINUM (S_IFREG)); +#endif +#ifdef S_IFLNK + scm_sysintern ("S_IFLNK", SCM_MAKINUM (S_IFLNK)); +#endif +#ifdef S_IFSOCK + scm_sysintern ("S_IFSOCK", SCM_MAKINUM (S_IFSOCK)); +#endif +#ifdef S_IFIFO + scm_sysintern ("S_IFIFO", SCM_MAKINUM (S_IFIFO)); +#endif + + + scm_tc16_fd = scm_newsmob (&fd_smob); + scm_tc16_dir = scm_newsmob (&dir_smob); + +#include "filesys.x" +} |