Bug#413310: zzuf: [patch] Allow LD_PRELOADing other libraries
On Sun, Mar 04, 2007 at 07:08:13AM +0200, Sami Liedes wrote:
> I found it useful to allow preloading other libraries when using zzuf.
> Here's a patch for that:
Argh, shouldn't do this when tired. Here's a patch that should work.
Sami
diff -ur zzuf-0.8.1/src/zzuf.c zzuf-0.8.1.sli/src/zzuf.c
--- zzuf-0.8.1/src/zzuf.c 2007-03-02 01:51:54.0 +0200
+++ zzuf-0.8.1.sli/src/zzuf.c 2007-03-04 09:50:13.0 +0200
@@ -837,7 +837,7 @@
char buf[64];
#if defined HAVE_FORK
static int const files[] = { DEBUG_FILENO, STDERR_FILENO, STDOUT_FILENO };
-char *libpath, *tmp;
+char *libpath, *tmp, *old_preload, *new_preload;
int pid, j, len = strlen(opts->oldargv[0]);
# if defined __APPLE__
# define FILENAME "libzzuf.dylib"
@@ -910,10 +910,31 @@
strcpy(tmp ? tmp + 1 : libpath, ".libs/" FILENAME EXTRAINFO);
if(ret == 0)
-setenv(PRELOAD, libpath, 1);
+{
+ old_preload = getenv(PRELOAD);
+ if (!old_preload)
+ old_preload = "";
+ new_preload = malloc(strlen(old_preload)+strlen(libpath)+2);
+ strcpy(new_preload, old_preload);
+ strcat(new_preload, ":");
+ strcat(new_preload, libpath);
+setenv(PRELOAD, new_preload, 1);
+}
else
-setenv(PRELOAD, LIBDIR "/" FILENAME EXTRAINFO, 1);
+{
+ old_preload = getenv(PRELOAD);
+ if (!old_preload)
+ old_preload = "";
+ new_preload =
+ malloc(strlen(old_preload)+
+ strlen(LIBDIR "/" FILENAME EXTRAINFO)+2);
+ strcpy(new_preload, old_preload);
+ strcat(new_preload, ":");
+ strcat(new_preload, LIBDIR "/" FILENAME EXTRAINFO);
+ setenv(PRELOAD, new_preload, 1);
+}
free(libpath);
+free(new_preload);
if(execvp(opts->newargv[0], opts->newargv))
{
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Bug#413310: zzuf: [patch] Allow LD_PRELOADing other libraries
Package: zzuf
Version: 0.8.1-1
Severity: wishlist
Tags: patch
Hi,
I found it useful to allow preloading other libraries when using zzuf.
Here's a patch for that:
diff -ur zzuf-0.8.1/src/zzuf.c zzuf-0.8.1.sli/src/zzuf.c
--- zzuf-0.8.1/src/zzuf.c 2007-03-02 01:51:54.0 +0200
+++ zzuf-0.8.1.sli/src/zzuf.c 2007-03-04 06:23:16.0 +0200
@@ -837,7 +837,7 @@
char buf[64];
#if defined HAVE_FORK
static int const files[] = { DEBUG_FILENO, STDERR_FILENO, STDOUT_FILENO };
-char *libpath, *tmp;
+char *libpath, *tmp, *old_preload, *new_preload;
int pid, j, len = strlen(opts->oldargv[0]);
# if defined __APPLE__
# define FILENAME "libzzuf.dylib"
@@ -910,10 +910,27 @@
strcpy(tmp ? tmp + 1 : libpath, ".libs/" FILENAME EXTRAINFO);
if(ret == 0)
-setenv(PRELOAD, libpath, 1);
+{
+ old_preload = getenv(PRELOAD);
+ new_preload = malloc(strlen(old_preload)+strlen(libpath)+2);
+ strcpy(new_preload, old_preload);
+ strcat(new_preload, ":");
+ strcat(new_preload, libpath);
+setenv(PRELOAD, new_preload, 1);
+}
else
-setenv(PRELOAD, LIBDIR "/" FILENAME EXTRAINFO, 1);
+{
+ old_preload = getenv(PRELOAD);
+ new_preload =
+ malloc(strlen(old_preload)+
+ strlen(LIBDIR "/" FILENAME EXTRAINFO)+2);
+ strcpy(new_preload, old_preload);
+ strcat(new_preload, ":");
+ strcat(new_preload, LIBDIR "/" FILENAME EXTRAINFO);
+ setenv(PRELOAD, new_preload, 1);
+}
free(libpath);
+free(new_preload);
if(execvp(opts->newargv[0], opts->newargv))
{
Sami
-- System Information:
Debian Release: 4.0
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.18-4-amd64
Locale: LANG=C, [EMAIL PROTECTED] (charmap=ISO-8859-15)
Versions of packages zzuf depends on:
ii libc6 2.3.6.ds1-13 GNU C Library: Shared libraries
zzuf recommends no packages.
-- no debconf information
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