o Back out rev 1.4 - reallocf() failure clobbers existing `environ'.
o Do not override `environ' if realloc() fails, leave it intact. o Set `alloced' only when memory is actually allocated. PR: bin/5604 (2nd part) Reviewed by: bde
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=56676
@ -32,7 +32,10 @@
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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static char sccsid[] = "@(#)setenv.c 8.1 (Berkeley) 6/4/93";
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#endif
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static const char rcsid[] = "$FreeBSD$";
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#endif /* LIBC_SCCS and not lint */
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#include <stddef.h>
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@ -73,16 +76,18 @@ setenv(name, value, rewrite)
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for (p = environ, cnt = 0; *p; ++p, ++cnt);
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if (alloced) { /* just increase size */
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environ = (char **)reallocf((char *)environ,
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p = (char **)realloc((char *)environ,
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(size_t)(sizeof(char *) * (cnt + 2)));
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if (!environ)
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if (!p)
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return (-1);
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environ = p;
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}
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else { /* get new space */
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alloced = 1; /* copy old entries into it */
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/* copy old entries into it */
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p = malloc((size_t)(sizeof(char *) * (cnt + 2)));
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if (!p)
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return (-1);
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alloced = 1;
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bcopy(environ, p, cnt * sizeof(char *));
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environ = p;
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}
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