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authorDenys Vlasenko2017-08-15 15:44:41 +0200
committerDenys Vlasenko2017-08-15 15:44:41 +0200
commit9832bbaba966f0e52e183f10cd93fad7f8f643fe (patch)
treee79e43916984e0d1a575c30ae2dd9a3893331316 /shell
parent4476c703015d026dfd8057a28010c33943aa2a9c (diff)
downloadbusybox-9832bbaba966f0e52e183f10cd93fad7f8f643fe.zip
busybox-9832bbaba966f0e52e183f10cd93fad7f8f643fe.tar.gz
ash: unset OPTARG if getopts exits 1, support OPTERR=0 behavior
function old new delta getoptscmd 522 547 +25 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'shell')
-rw-r--r--shell/ash.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/shell/ash.c b/shell/ash.c
index 58999fa..703802f 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -10948,6 +10948,7 @@ getopts(char *optstr, char *optvar, char **optfirst)
p = *optnext;
if (p == NULL || *p != '-' || *++p == '\0') {
atend:
+ unsetvar("OPTARG");
p = NULL;
done = 1;
goto out;
@@ -10960,7 +10961,11 @@ getopts(char *optstr, char *optvar, char **optfirst)
c = *p++;
for (q = optstr; *q != c;) {
if (*q == '\0') {
- if (optstr[0] == ':') {
+ /* OPTERR is a bashism */
+ const char *cp = lookupvar("OPTERR");
+ if ((cp && LONE_CHAR(cp, '0'))
+ || (optstr[0] == ':')
+ ) {
sbuf[0] = c;
/*sbuf[1] = '\0'; - already is */
setvar0("OPTARG", sbuf);
@@ -10977,7 +10982,11 @@ getopts(char *optstr, char *optvar, char **optfirst)
if (*++q == ':') {
if (*p == '\0' && (p = *optnext) == NULL) {
- if (optstr[0] == ':') {
+ /* OPTERR is a bashism */
+ const char *cp = lookupvar("OPTERR");
+ if ((cp && LONE_CHAR(cp, '0'))
+ || (optstr[0] == ':')
+ ) {
sbuf[0] = c;
/*sbuf[1] = '\0'; - already is */
setvar0("OPTARG", sbuf);