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sh: Fix confusing behaviour if chdir succeeded but getcwd failed in cd -P.

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If getcwd fails, do not treat this as an error, but print a warning and
unset PWD. This is similar to the behaviour when starting the shell in a
directory whose name cannot be determined.
This commit is contained in:
Jilles Tjoelker 2010-11-22 23:49:06 +00:00
parent ccf7ba972c
commit ae7f47355d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=215727
1 changed files with 5 additions and 2 deletions
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7
bin/sh/cd.c
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@ -219,10 +219,13 @@ cdphysical(char *dest)
char *p;
INTOFF;
if (chdir(dest) < 0 || (p = findcwd(NULL)) == NULL) {
if (chdir(dest) < 0) {
INTON;
return (-1);
}
p = findcwd(NULL);
if (p == NULL)
out2fmt_flush("cd: warning: failed to get name of current directory\n");
updatepwd(p);
INTON;
return (0);
@ -304,7 +307,7 @@ updatepwd(char *dir)
if (prevdir)
ckfree(prevdir);
prevdir = curdir;
curdir = savestr(dir);
curdir = dir ? savestr(dir) : NULL;
setvar("PWD", curdir, VEXPORT);
setvar("OLDPWD", prevdir, VEXPORT);
}