busybox: fix existing "export -n" in ash

Minor fix to existing patch which did not correctly implement -n support for the export command in ash. The VEXPORT flag of a variable was set in the first call to setvareq() and then remained set in the subsequent call, because the variable already existed in the environment.

Although /lib/functions.sh by default does not export variables (NO_EXPORT=1), this issue was leading to dirty environments.

Without this fix:
(ash) export A=1; export -n B=2; /bin/ash -c "echo \$A, \$B"
1, 2

With this fix:
(ash) export A=1; export -n B=2; /bin/ash -c "echo \$A, \$B"
1,

Signed-off-by: Christophe Lermytte <openwrt@lermytte.be>

SVN-Revision: 39968
master
Felix Fietkau 11 years ago
parent e926cfd9ac
commit 33ae9569a4
  1. 4
      package/utils/busybox/patches/250-ash_export-n.patch

@ -19,7 +19,7 @@
aptr = argptr;
name = *aptr;
if (name) {
@@ -12624,10 +12633,12 @@ exportcmd(int argc UNUSED_PARAM, char **
@@ -12624,10 +12633,11 @@ exportcmd(int argc UNUSED_PARAM, char **
vp = *findvar(hashvar(name), name);
if (vp) {
vp->flags |= flag;
@ -27,7 +27,7 @@
continue;
}
}
setvar(name, p, flag);
- setvar(name, p, flag);
+ setvar(name, p, flag & mask);
} while ((name = *++aptr) != NULL);
return 0;

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