/* environ.c -- library for manipulating environments for GNU.
- Copyright (C) 1986 Free Software Foundation, Inc.
-
- NO WARRANTY
-
- BECAUSE THIS PROGRAM IS LICENSED FREE OF CHARGE, WE PROVIDE ABSOLUTELY
-NO WARRANTY, TO THE EXTENT PERMITTED BY APPLICABLE STATE LAW. EXCEPT
-WHEN OTHERWISE STATED IN WRITING, FREE SOFTWARE FOUNDATION, INC,
-RICHARD M. STALLMAN AND/OR OTHER PARTIES PROVIDE THIS PROGRAM "AS IS"
-WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
-BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
-FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY
-AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
-DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
-CORRECTION.
-
- IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW WILL RICHARD M.
-STALLMAN, THE FREE SOFTWARE FOUNDATION, INC., AND/OR ANY OTHER PARTY
-WHO MAY MODIFY AND REDISTRIBUTE THIS PROGRAM AS PERMITTED BELOW, BE
-LIABLE TO YOU FOR DAMAGES, INCLUDING ANY LOST PROFITS, LOST MONIES, OR
-OTHER SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
-USE OR INABILITY TO USE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR
-DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY THIRD PARTIES OR
-A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS) THIS
-PROGRAM, EVEN IF YOU HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH
-DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY.
-
- GENERAL PUBLIC LICENSE TO COPY
-
- 1. You may copy and distribute verbatim copies of this source file
-as you receive it, in any medium, provided that you conspicuously and
-appropriately publish on each copy a valid copyright notice "Copyright
-(C) 1986 Free Software Foundation, Inc."; and include following the
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- c) You may charge a distribution fee for the physical act of
- transferring a copy, and you may at your option offer warranty
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- 3. You may copy and distribute this program (or a portion or derivative
-of it, under Paragraph 2) in object code or executable form under the terms
-of Paragraphs 1 and 2 above provided that you also do one of the following:
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- a) accompany it with the complete corresponding machine-readable
- source code, which must be distributed under the terms of
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- years, to give any third party free (except for a nominal
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- received the program in object code or executable form alone.)
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-For an executable file, complete source code means all the source code for
-all modules it contains; but, as a special exception, it need not include
-source code for modules which are standard libraries that accompany the
-operating system on which the executable file runs.
-
- 4. You may not copy, sublicense, distribute or transfer this program
-except as expressly provided under this License Agreement. Any attempt
-otherwise to copy, sublicense, distribute or transfer this program is void and
-your rights to use the program under this License agreement shall be
-automatically terminated. However, parties who have received computer
-software programs from you with this License Agreement will not have
-their licenses terminated so long as such parties remain in full compliance.
-
- 5. If you wish to incorporate parts of this program into other free
-programs whose distribution conditions are different, write to the Free
-Software Foundation at 675 Mass Ave, Cambridge, MA 02139. We have not yet
-worked out a simple rule that can be stated here, but we will often permit
-this. We will be guided by the two goals of preserving the free status of
-all derivatives of our free software and of promoting the sharing and reuse of
-software.
-
-In other words, feel free to share this program, but don't try to
-stop anyone else from sharing it. */
+ Copyright (C) 1986, 1989 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 of the License, 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 program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))
+#include "defs.h"
#include "environ.h"
+#include "gdb_string.h"
+#include "gdbcore.h"
+
\f
/* Return a new environment object. */
extern char **environ;
register int i;
- for (i = 0; environ[i]; i++);
+ if (environ == NULL)
+ return;
+
+ for (i = 0; environ[i]; i++) /*EMPTY*/;
if (e->allocated < i)
{
e->allocated = max (i, e->allocated + 10);
- e->vector = (char **) xrealloc (e->vector,
+ e->vector = (char **) xrealloc ((char *)e->vector,
(e->allocated + 1) * sizeof (char *));
}
- bcopy (environ, e->vector, (i + 1) * sizeof (char *));
+ memcpy (e->vector, environ, (i + 1) * sizeof (char *));
while (--i >= 0)
{
register int len = strlen (e->vector[i]);
register char *new = (char *) xmalloc (len + 1);
- bcopy (e->vector[i], new, len);
+ memcpy (new, e->vector[i], len + 1);
e->vector[i] = new;
}
}
char *
get_in_environ (e, var)
- struct environ *e;
- char *var;
+ const struct environ *e;
+ const char *var;
{
register int len = strlen (var);
register char **vector = e->vector;
register char *s;
- for (; s = *vector; vector++)
- if (!strncmp (s, var, len)
- && s[len] == '=')
+ for (; (s = *vector) != NULL; vector++)
+ if (STREQN (s, var, len) && s[len] == '=')
return &s[len + 1];
return 0;
void
set_in_environ (e, var, value)
struct environ *e;
- char *var;
- char *value;
+ const char *var;
+ const char *value;
{
register int i;
register int len = strlen (var);
register char **vector = e->vector;
register char *s;
- for (i = 0; s = vector[i]; i++)
- if (!strncmp (s, var, len)
- && s[len] == '=')
+ for (i = 0; (s = vector[i]) != NULL; i++)
+ if (STREQN (s, var, len) && s[len] == '=')
break;
if (s == 0)
if (i == e->allocated)
{
e->allocated += 10;
- vector = (char **) xrealloc (vector,
+ vector = (char **) xrealloc ((char *)vector,
(e->allocated + 1) * sizeof (char *));
e->vector = vector;
}
strcat (s, "=");
strcat (s, value);
vector[i] = s;
+
+ /* This used to handle setting the PATH and GNUTARGET variables
+ specially. The latter has been replaced by "set gnutarget"
+ (which has worked since GDB 4.11). The former affects searching
+ the PATH to find SHELL, and searching the PATH to find the
+ argument of "symbol-file" or "exec-file". Maybe we should have
+ some kind of "set exec-path" for that. But in any event, having
+ "set env" affect anything besides the inferior is a bad idea.
+ What if we want to change the environment we pass to the program
+ without afecting GDB's behavior? */
+
return;
}
register char **vector = e->vector;
register char *s;
- for (; s = *vector; vector++)
- if (!strncmp (s, var, len)
- && s[len] == '=')
- {
- free (s);
- bcopy (vector + 1, vector,
- (e->allocated - (vector - e->vector)) * sizeof (char *));
- e->vector[e->allocated - 1] = 0;
- return;
- }
+ for (; (s = *vector) != NULL; vector++)
+ {
+ if (STREQN (s, var, len) && s[len] == '=')
+ {
+ free (s);
+ /* Walk through the vector, shuffling args down by one, including
+ the NULL terminator. Can't use memcpy() here since the regions
+ overlap, and memmove() might not be available. */
+ while ((vector[0] = vector[1]) != NULL)
+ {
+ vector++;
+ }
+ break;
+ }
+ }
}
projects / deliverable / binutils-gdb.git / blobdiff