Can I get the Current Working Directory in SystemTap under RHEL6

I have the following SystemTap program:

#!/usr/bin/stap

function proc:string() {

    return sprintf("[%s] %s(%s)::%s() (pid %d, uid %d, cwd %s)",

        execname(), cmdline_arg(0), cmdline_args(1,-1,", "), caller(), pid(), uid(),

        fullpath_struct_path(task_cwd_path(task_current()))

    );

}



probe syscall.open.return, syscall.stat.return,

    syscall.open64.return ?, syscall.stat64.return ? {

    filename = user_string($filename);

    if ($return < 0) {

        eno = -$return;

        printf("%s => %s '%s' by %sn", pn(), errno_str(eno), filename, proc());

    }

}

when run it gets the following error:

semantic error: unresolved function (similar: d_path, inode_path, task_cpu, task_current, task_dentry_path): identifier 'task_cwd_path' at /tmp/stap-test:5:30

which I believe is because Red Hat did not add the task_cwd_path() function until RHEL7. Is there an alternative way to return the current directory that will work with RHEL6?

asked Jan 1 at 12:36

John Hascall

7,60643760

add a comment |

I have the following SystemTap program:

#!/usr/bin/stap

function proc:string() {

    return sprintf("[%s] %s(%s)::%s() (pid %d, uid %d, cwd %s)",

        execname(), cmdline_arg(0), cmdline_args(1,-1,", "), caller(), pid(), uid(),

        fullpath_struct_path(task_cwd_path(task_current()))

    );

}



probe syscall.open.return, syscall.stat.return,

    syscall.open64.return ?, syscall.stat64.return ? {

    filename = user_string($filename);

    if ($return < 0) {

        eno = -$return;

        printf("%s => %s '%s' by %sn", pn(), errno_str(eno), filename, proc());

    }

}

when run it gets the following error:

semantic error: unresolved function (similar: d_path, inode_path, task_cpu, task_current, task_dentry_path): identifier 'task_cwd_path' at /tmp/stap-test:5:30

which I believe is because Red Hat did not add the task_cwd_path() function until RHEL7. Is there an alternative way to return the current directory that will work with RHEL6?

asked Jan 1 at 12:36

John Hascall

7,60643760

add a comment |

I have the following SystemTap program:

#!/usr/bin/stap

function proc:string() {

    return sprintf("[%s] %s(%s)::%s() (pid %d, uid %d, cwd %s)",

        execname(), cmdline_arg(0), cmdline_args(1,-1,", "), caller(), pid(), uid(),

        fullpath_struct_path(task_cwd_path(task_current()))

    );

}



probe syscall.open.return, syscall.stat.return,

    syscall.open64.return ?, syscall.stat64.return ? {

    filename = user_string($filename);

    if ($return < 0) {

        eno = -$return;

        printf("%s => %s '%s' by %sn", pn(), errno_str(eno), filename, proc());

    }

}

when run it gets the following error:

semantic error: unresolved function (similar: d_path, inode_path, task_cpu, task_current, task_dentry_path): identifier 'task_cwd_path' at /tmp/stap-test:5:30

which I believe is because Red Hat did not add the task_cwd_path() function until RHEL7. Is there an alternative way to return the current directory that will work with RHEL6?

asked Jan 1 at 12:36

John Hascall

7,60643760

I have the following SystemTap program:

#!/usr/bin/stap

function proc:string() {

    return sprintf("[%s] %s(%s)::%s() (pid %d, uid %d, cwd %s)",

        execname(), cmdline_arg(0), cmdline_args(1,-1,", "), caller(), pid(), uid(),

        fullpath_struct_path(task_cwd_path(task_current()))

    );

}



probe syscall.open.return, syscall.stat.return,

    syscall.open64.return ?, syscall.stat64.return ? {

    filename = user_string($filename);

    if ($return < 0) {

        eno = -$return;

        printf("%s => %s '%s' by %sn", pn(), errno_str(eno), filename, proc());

    }

}

when run it gets the following error:

semantic error: unresolved function (similar: d_path, inode_path, task_cpu, task_current, task_dentry_path): identifier 'task_cwd_path' at /tmp/stap-test:5:30

which I believe is because Red Hat did not add the task_cwd_path() function until RHEL7. Is there an alternative way to return the current directory that will work with RHEL6?

rhel6 systemtap current-working-directory

asked Jan 1 at 12:36

John Hascall

7,60643760

asked Jan 1 at 12:36

John Hascall

7,60643760

asked Jan 1 at 12:36

John Hascall

7,60643760

asked Jan 1 at 12:36

John Hascall

7,60643760

asked Jan 1 at 12:36

John Hascall

7,60643760

add a comment |

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