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pathchk: Add the new POSIX -P option.

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This option checks for empty pathnames and components starting with '-'.
Our -p option also checks for the latter, which remains the case.

MFC after:	1 week
This commit is contained in:
Jilles Tjoelker 2010-05-01 22:00:28 +00:00
parent aa1b887b41
commit da21952559
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=207483
2 changed files with 26 additions and 6 deletions
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14
usr.bin/pathchk/pathchk.1
View File

@ -27,7 +27,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd May 21, 2002
.Dd May 1, 2010
.Dt PATHCHK 1
.Os
.Sh NAME
@ -35,7 +35,7 @@
.Nd check pathnames
.Sh SYNOPSIS
.Nm
.Op Fl p
.Op Fl pP
.Ar pathname ...
.Sh DESCRIPTION
The
@ -95,6 +95,16 @@ No component may start with the hyphen
.Pq Ql \&-
character.
.El
.It Fl P
In addition to the default or
.Fl p
checks, write a diagnostic for each argument that:
.Bl -bullet
.It
Is empty.
.It
Contains a component that starts with a hyphen.
.El
.El
.Sh EXIT STATUS
.Ex -std

18
usr.bin/pathchk/pathchk.c
View File

@ -51,6 +51,7 @@ static int portable(const char *);
static void usage(void);
static int pflag; /* Perform portability checks */
static int Pflag; /* Check for empty paths, leading '-' */
int
main(int argc, char *argv[])
@ -58,11 +59,14 @@ main(int argc, char *argv[])
int ch, rval;
const char *arg;
while ((ch = getopt(argc, argv, "p")) > 0) {
while ((ch = getopt(argc, argv, "pP")) > 0) {
switch (ch) {
case 'p':
pflag = 1;
break;
case 'P':
Pflag = 1;
break;
default:
usage();
/*NOTREACHED*/
@ -102,6 +106,15 @@ check(const char *path)
p = pathd;
if (Pflag && *p == '\0') {
warnx("%s: empty pathname", path);
goto bad;
}
if ((Pflag || pflag) && (*p == '-' || strstr(p, "/-") != NULL)) {
warnx("%s: contains a component starting with '-'", path);
goto bad;
}
if (!pflag) {
errno = 0;
namemax = pathconf(*p == '/' ? "/" : ".", _PC_NAME_MAX);
@ -182,9 +195,6 @@ portable(const char *path)
"0123456789._-";
long s;
if (*path == '-')
return (*path);
s = strspn(path, charset);
if (path[s] != '\0')
return (path[s]);