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Fix a long-standing bug where if the package being deleted had no

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post-deinstall script, the variable intended to hold the name of that
script would be used uninitialized.  In some cases, fexists() would
succeed, causing pkg_delete to try to chmod +x it, then execute it,
resulting in bizarre error messages such as:

.//: Permission denied

This bug would normally only occur when multiple packages were
specified on the command line; otherwise post_script would be located
in a previously unused part of the stack, and implicitly (but quite
accidentally) initialized to all-zeros.

MFC after:	3 days
This commit is contained in:
Dag-Erling Smørgrav 2003-02-25 15:01:54 +00:00
parent 2e6c2a1089
commit 0f98df2956
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=111486
2 changed files with 12 additions and 14 deletions
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2
usr.sbin/pkg_install/delete/Makefile
View File

@ -5,7 +5,7 @@ SRCS= main.c perform.c
CFLAGS+= ${DEBUG} -I${.CURDIR}/../lib
WARNS?= 2
WARNS?= 4
DPADD= ${LIBINSTALL} ${LIBMD}
LDADD= ${LIBINSTALL} -lmd

24
usr.sbin/pkg_install/delete/perform.c
View File

@ -126,9 +126,8 @@ pkg_do(char *pkg)
int i, len;
/* support for separate pre/post install scripts */
int new_m = 0;
char pre_script[FILENAME_MAX] = DEINSTALL_FNAME;
char post_script[FILENAME_MAX];
char pre_arg[FILENAME_MAX], post_arg[FILENAME_MAX];
const char *pre_script = DEINSTALL_FNAME;
const char *post_script, *pre_arg, *post_arg;
struct reqr_by_entry *rb_entry;
struct reqr_by_head *rb_list;
@ -224,18 +223,17 @@ pkg_do(char *pkg)
if (fexists(POST_DEINSTALL_FNAME)) {
new_m = 1;
sprintf(post_script, "%s", POST_DEINSTALL_FNAME);
pre_arg[0] = '\0';
post_arg[0] = '\0';
post_script = POST_DEINSTALL_FNAME;
pre_arg = post_arg = "";
} else if (fexists(DEINSTALL_FNAME)) {
post_script = DEINSTALL_FNAME;
pre_arg = "DEINSTALL";
post_arg = "POST-DEINSTALL";
} else {
if (fexists(DEINSTALL_FNAME)) {
sprintf(post_script, "%s", DEINSTALL_FNAME);
sprintf(pre_arg, "DEINSTALL");
sprintf(post_arg, "POST-DEINSTALL");
}
post_script = pre_arg = post_arg = NULL;
}
if (!NoDeInstall && fexists(pre_script)) {
if (!NoDeInstall && pre_script != NULL && fexists(pre_script)) {
if (Fake)
printf("Would execute de-install script at this point.\n");
else {
@ -268,7 +266,7 @@ pkg_do(char *pkg)
return 1;
}
if (!NoDeInstall && fexists(post_script)) {
if (!NoDeInstall && post_script != NULL && fexists(post_script)) {
if (Fake)
printf("Would execute post-deinstall script at this point.\n");
else {