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From Petteri Räty (JIRA) <>
Subject [jira] Commented: (DAEMON-92) jsvc fails to execve() self on Linux
Date Wed, 24 Jan 2007 21:56:49 GMT


Petteri Räty commented on DAEMON-92:

execve works just fine with relative paths here:

betelgeuse@pena ~/c-koodaus $ ./exec
Hello World!
betelgeuse@pena ~/c-koodaus $ cat exec.c
#include <unistd.h>
int main(int nArgs, char **ppArgs)
        char *const argv[] = {NULL};
        char *const envp[] = {NULL};
        execve("./hello", argv, envp);

> jsvc fails to execve() self on Linux
> ------------------------------------
>                 Key: DAEMON-92
>                 URL:
>             Project: Commons Daemon
>          Issue Type: Bug
>    Affects Versions: 1.0.1 Final
>            Reporter: Simone Piunno
>             Fix For: 1.0.1 Final
>         Attachments: 1.0.1-execve-self.patch
> On Linux jsvc execve() itself.
> execve() requires an absolute path as the first argument therefore use of argv[0] only
works when jsvc was invoked with a full path.
> Executing jsvc as relative path fails with "jsvc error: Cannot execute JSVC executor
> On Linux the full path to self is very easy to find: "/proc/self/exe"
> I'm attaching a patch fixing this problem and falling back to argv[0] in case /proc is
not mounted.

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