diff options
Diffstat (limited to 'gdb/environ.c')
| -rw-r--r-- | gdb/environ.c | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/gdb/environ.c b/gdb/environ.c deleted file mode 100644 index 1f9a9d67e9f..00000000000 --- a/gdb/environ.c +++ /dev/null @@ -1,185 +0,0 @@ -/* environ.c -- library for manipulating environments for GNU. - Copyright 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 2000 - 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., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, 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" - - -/* Return a new environment object. */ - -struct environ * -make_environ (void) -{ - register struct environ *e; - - e = (struct environ *) xmalloc (sizeof (struct environ)); - - e->allocated = 10; - e->vector = (char **) xmalloc ((e->allocated + 1) * sizeof (char *)); - e->vector[0] = 0; - return e; -} - -/* Free an environment and all the strings in it. */ - -void -free_environ (register struct environ *e) -{ - register char **vector = e->vector; - - while (*vector) - xfree (*vector++); - - xfree (e); -} - -/* Copy the environment given to this process into E. - Also copies all the strings in it, so we can be sure - that all strings in these environments are safe to free. */ - -void -init_environ (register struct environ *e) -{ - extern char **environ; - register int 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 ((char *) e->vector, - (e->allocated + 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); - memcpy (new, e->vector[i], len + 1); - e->vector[i] = new; - } -} - -/* Return the vector of environment E. - This is used to get something to pass to execve. */ - -char ** -environ_vector (struct environ *e) -{ - return e->vector; -} - -/* Return the value in environment E of variable VAR. */ - -char * -get_in_environ (const struct environ *e, const char *var) -{ - register int len = strlen (var); - register char **vector = e->vector; - register char *s; - - for (; (s = *vector) != NULL; vector++) - if (STREQN (s, var, len) && s[len] == '=') - return &s[len + 1]; - - return 0; -} - -/* Store the value in E of VAR as VALUE. */ - -void -set_in_environ (struct environ *e, 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]) != NULL; i++) - if (STREQN (s, var, len) && s[len] == '=') - break; - - if (s == 0) - { - if (i == e->allocated) - { - e->allocated += 10; - vector = (char **) xrealloc ((char *) vector, - (e->allocated + 1) * sizeof (char *)); - e->vector = vector; - } - vector[i + 1] = 0; - } - else - xfree (s); - - s = (char *) xmalloc (len + strlen (value) + 2); - strcpy (s, var); - 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; -} - -/* Remove the setting for variable VAR from environment E. */ - -void -unset_in_environ (struct environ *e, char *var) -{ - register int len = strlen (var); - register char **vector = e->vector; - register char *s; - - for (; (s = *vector) != NULL; vector++) - { - if (STREQN (s, var, len) && s[len] == '=') - { - xfree (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; - } - } -} |