1 /* Copyright (C) 1996 Free Software Foundation, Inc.
3 This file is part of GNU Bash, the Bourne Again SHell.
5 Bash is free software; you can redistribute it and/or modify it under
6 the terms of the GNU General Public License as published by the Free
7 Software Foundation; either version 1, or (at your option) any later
10 Bash is distributed in the hope that it will be useful, but WITHOUT ANY
11 WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 You should have received a copy of the GNU General Public License along
16 with Bash; see the file COPYING. If not, write to the Free Software
17 Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
21 #if defined (HAVE_UNISTD_H)
25 #include "../bashtypes.h"
26 #include "../posixstat.h"
27 #include "../filecntl.h"
33 #include "../bashansi.h"
37 #include "../builtins.h"
40 #include "../execute_cmd.h"
43 # include "../bashhist.h"
52 /* Flags for _evalfile() */
53 #define FEVAL_ENOENTOK 0x001
54 #define FEVAL_BUILTIN 0x002
55 #define FEVAL_UNWINDPROT 0x004
56 #define FEVAL_NONINT 0x008
57 #define FEVAL_LONGJMP 0x010
58 #define FEVAL_HISTORY 0x020
60 extern int interactive, interactive_shell, posixly_correct;
61 extern int indirection_level, startup_state, subshell_environment;
62 extern int return_catch_flag, return_catch_value;
63 extern int last_command_exit_value;
65 /* How many `levels' of sourced files we have. */
69 _evalfile (filename, flags)
73 volatile int old_interactive;
74 procenv_t old_return_catch;
75 int return_val, fd, result, pflags;
80 fd = open (filename, O_RDONLY);
82 if (fd < 0 || (fstat (fd, &finfo) == -1))
85 if (((flags & FEVAL_ENOENTOK) == 0) || errno != ENOENT)
86 file_error (filename);
88 if (flags & FEVAL_LONGJMP)
90 last_command_exit_value = 1;
91 jump_to_top_level (EXITPROG);
94 return ((flags & FEVAL_BUILTIN) ? EXECUTION_FAILURE
95 : ((errno == ENOENT) ? 0 : -1));
98 errfunc = (VFunction *)((flags & FEVAL_BUILTIN) ? builtin_error : internal_error);
100 if (S_ISDIR (finfo.st_mode))
102 (*errfunc) ("%s: is a directory", filename);
103 return ((flags & FEVAL_BUILTIN) ? EXECUTION_FAILURE : -1);
105 else if (S_ISREG (finfo.st_mode) == 0)
107 (*errfunc) ("%s: not a regular file", filename);
108 return ((flags & FEVAL_BUILTIN) ? EXECUTION_FAILURE : -1);
111 string = xmalloc (1 + (int)finfo.st_size);
112 result = read (fd, string, finfo.st_size);
113 string[result] = '\0';
119 if (result != (int)finfo.st_size)
122 goto file_error_and_exit;
125 if (check_binary_file ((unsigned char *)string, (result > 80) ? 80 : result))
128 (*errfunc) ("%s: cannot execute binary file", filename);
129 return ((flags & FEVAL_BUILTIN) ? EX_BINARY_FILE : -1);
132 if (flags & FEVAL_UNWINDPROT)
134 begin_unwind_frame ("_evalfile");
136 unwind_protect_int (return_catch_flag);
137 unwind_protect_jmp_buf (return_catch);
138 if (flags & FEVAL_NONINT)
139 unwind_protect_int (interactive);
140 unwind_protect_int (sourcelevel);
144 COPY_PROCENV (return_catch, old_return_catch);
145 if (flags & FEVAL_NONINT)
146 old_interactive = interactive;
149 if (flags & FEVAL_NONINT)
155 /* set the flags to be passed to parse_and_execute */
156 pflags = (flags & FEVAL_HISTORY) ? 0 : SEVAL_NOHIST;
158 if (flags & FEVAL_BUILTIN)
159 result = EXECUTION_SUCCESS;
161 return_val = setjmp (return_catch);
163 /* If `return' was seen outside of a function, but in the script, then
164 force parse_and_execute () to clean up. */
167 parse_and_execute_cleanup ();
168 result = return_catch_value;
171 result = parse_and_execute (string, filename, pflags);
173 if (flags & FEVAL_UNWINDPROT)
174 run_unwind_frame ("_evalfile");
177 if (flags & FEVAL_NONINT)
178 interactive = old_interactive;
181 COPY_PROCENV (old_return_catch, return_catch);
184 return ((flags & FEVAL_BUILTIN) ? result : 1);
188 maybe_execute_file (fname, force_noninteractive)
190 int force_noninteractive;
195 filename = bash_tilde_expand (fname);
196 flags = FEVAL_ENOENTOK;
197 if (force_noninteractive)
198 flags |= FEVAL_NONINT;
199 result = _evalfile (filename, flags);
204 #if defined (HISTORY)
206 fc_execute_file (filename)
211 /* We want these commands to show up in the history list if
212 remember_on_history is set. */
213 flags = FEVAL_ENOENTOK|FEVAL_HISTORY;
214 return (_evalfile (filename, flags));
219 source_file (filename)
224 flags = FEVAL_BUILTIN|FEVAL_UNWINDPROT|FEVAL_NONINT;
225 /* POSIX shells exit if non-interactive and file error. */
226 if (posixly_correct && !interactive_shell)
227 flags |= FEVAL_LONGJMP;
228 return (_evalfile (filename, flags));