Bruce Evans b01f0b7d76 Obtained from: 1.1.5 ... getcwd() has two off-by-one bugs in FreeBSD-2.0: 1. getcwd(buf, size) fails when the size is just large enough. 2. getcwd(buf + 1, 1) incorrectly succeeds when the current directory is "/". buf[0] and buf[2] are clobbered. (I modified Bruce's original patch to return the proper error code [ERANGE] in the case of #2, but otherwise... -DG) This program demonstrates the bug: --- #include <stdlib.h> #include <string.h> #include <stdio.h> #include <unistd.h> int main(void) { char buf[5]; int errors; errors = 0; if (chdir("/tmp") != 0) { perror("chdir"); abort(); } if (getcwd(buf, 5) == NULL) { perror("oops, getcwd failed for buffer size = size required"); ++errors; } if (chdir("/") != 0) { perror("chdir"); abort(); } buf[0] = 0; buf[2] = 1; if (getcwd(buf + 1, 1) != NULL) { fprintf(stderr, "oops, getcwd succeeded for buffer size = one too small\n"); ++errors; } if (buf[0] != 0) { fprintf(stderr, "oops, getcwd scribbled on memory before start of buffer\n"); ++errors; } if (buf[2] != 1) { fprintf(stderr, "oops, getcwd scribbled on memory after end of buffer\n"); ++errors; } exit(errors == 0 ? 0 : 1); }		1994-12-12 01:29:13 +00:00
..
csu/i386
libc	Obtained from: 1.1.5	1994-12-12 01:29:13 +00:00
libcompat
libcrypt
libcurses	tputs: (char) -> (int)	1994-12-10 23:02:33 +00:00
libedit
libf2c
libF77
libforms
libI77
libkvm
libm
libmd
libmytinfo
libncurses	tputs prototypes...	1994-12-10 23:10:41 +00:00
libpam/modules
libresolv
librpc
librpcsvc
libskey
libtelnet
libterm
libtermcap
libutil
liby
msun
ncurses/ncurses
rpcsvc
Makefile
Makefile.inc