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author | John Gilmore <gnu@cygnus> | 1990-09-05 17:54:31 +0000 |
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committer | John Gilmore <gnu@cygnus> | 1990-09-05 17:54:31 +0000 |
commit | 831c851165e112139af1265f294e198401814c1f (patch) | |
tree | 5f155fecb9b690be9c428e822d519c2710fefd47 /gdb/environ.c | |
parent | 7a67dd45ca1c191a0220697a3ec9fa92993caf8c (diff) | |
download | gdb-831c851165e112139af1265f294e198401814c1f.zip gdb-831c851165e112139af1265f294e198401814c1f.tar.gz gdb-831c851165e112139af1265f294e198401814c1f.tar.bz2 |
Initial revision
Diffstat (limited to 'gdb/environ.c')
-rw-r--r-- | gdb/environ.c | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/gdb/environ.c b/gdb/environ.c deleted file mode 100644 index 27aa3ae..0000000 --- a/gdb/environ.c +++ /dev/null @@ -1,173 +0,0 @@ -/* environ.c -- library for manipulating environments for GNU. - 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 1, 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 "environ.h" - -/* Return a new environment object. */ - -struct environ * -make_environ () -{ - 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 (e) - register struct environ *e; -{ - register char **vector = e->vector; - - while (*vector) - free (*vector++); - - free (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 (e) - register struct environ *e; -{ - extern char **environ; - register int i; - - for (i = 0; environ[i]; i++); - - if (e->allocated < i) - { - e->allocated = max (i, e->allocated + 10); - e->vector = (char **) xrealloc (e->vector, - (e->allocated + 1) * sizeof (char *)); - } - - bcopy (environ, e->vector, (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); - e->vector[i] = new; - } -} - -/* Return the vector of environment E. - This is used to get something to pass to execve. */ - -char ** -environ_vector (e) - struct environ *e; -{ - return e->vector; -} - -/* Return the value in environment E of variable VAR. */ - -char * -get_in_environ (e, var) - struct environ *e; - 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] == '=') - return &s[len + 1]; - - return 0; -} - -/* Store the value in E of VAR as VALUE. */ - -void -set_in_environ (e, var, value) - struct environ *e; - char *var; - 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] == '=') - break; - - if (s == 0) - { - if (i == e->allocated) - { - e->allocated += 10; - vector = (char **) xrealloc (vector, - (e->allocated + 1) * sizeof (char *)); - e->vector = vector; - } - vector[i + 1] = 0; - } - else - free (s); - - s = (char *) xmalloc (len + strlen (value) + 2); - strcpy (s, var); - strcat (s, "="); - strcat (s, value); - vector[i] = s; - return; -} - -/* Remove the setting for variable VAR from environment E. */ - -void -unset_in_environ (e, var) - struct environ *e; - 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] == '=') - { - free (s); - bcopy (vector + 1, vector, - (e->allocated - (vector - e->vector)) * sizeof (char *)); - e->vector[e->allocated - 1] = 0; - return; - } -} |