Displaying 4 results from an estimated 4 matches for "plugin_load_fil".
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plugin_load_file
2018 Nov 07
2
Re: guestfs_launch() fails when C application is started as a systemd service
...rked - I
launched it with popen.
> So it must be something to do with collectd and how it runs programs.
> Is it using LD_PRELOAD trickery, or replacing libc, or using seccomp?
If I understand the question correctly - it's about how collectd loads its
plugins? If so it uses:
static int plugin_load_file(const char *file, _Bool global) {
void (*reg_handle)(void);
int flags = RTLD_NOW;
if (global)
flags |= RTLD_GLOBAL;
void *dlh = *dlopen*(file, flags);
//...
reg_handle = (void (*)(void))*dlsym*(dlh, "module_register");
//...
*(*reg_handle)();*
}
Does this give a...
2018 Nov 07
0
Re: guestfs_launch() fails when C application is started as a systemd service
...gt; > So it must be something to do with collectd and how it runs programs.
> > Is it using LD_PRELOAD trickery, or replacing libc, or using seccomp?
>
> If I understand the question correctly - it's about how collectd loads its
> plugins? If so it uses:
>
> static int plugin_load_file(const char *file, _Bool global) {
> void (*reg_handle)(void);
> int flags = RTLD_NOW;
> if (global)
> flags |= RTLD_GLOBAL;
> void *dlh = *dlopen*(file, flags);
> //...
> reg_handle = (void (*)(void))*dlsym*(dlh, "module_register");
> //...
&...
2018 Nov 08
2
Re: guestfs_launch() fails when C application is started as a systemd service
...to do with collectd and how it runs programs.
> > > Is it using LD_PRELOAD trickery, or replacing libc, or using seccomp?
> >
> > If I understand the question correctly - it's about how collectd loads
> its
> > plugins? If so it uses:
> >
> > static int plugin_load_file(const char *file, _Bool global) {
> > void (*reg_handle)(void);
> > int flags = RTLD_NOW;
> > if (global)
> > flags |= RTLD_GLOBAL;
> > void *dlh = *dlopen*(file, flags);
> > //...
> > reg_handle = (void (*)(void))*dlsym*(dlh, "mod...
2018 Nov 07
2
Re: guestfs_launch() fails when C application is started as a systemd service
Thank you, Rich,
This was the issue indeed. export LIBGUESTFS_BACKEND=direct fixed it.
The next step I tried was to integrate libguestfs in collectd virt plugin
to collect this data automatically.
In this case I'm having an unknown error in add_libvirt_dom() (same with
add_domain) when it's invoking qemu-img to create overlay image.
There is no difference between manual and service