Hello everyone:

I need some help... 2 simple problems:


1) Is there any c++ function that tells you the current user ID in linux?

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2) Is there any c++ function thats tells you the name of a job... like

myString = getTheNameOfTheJob(index or something);
myString now equals --> "Sleep 10"

The intention is to implement something similar to the bash "jobs" function

like:

$jobs

pid cmd

1233 sleep 10
1234 another process or command
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Thank you in advance

HW

The answers to these questions are the same for C and C++.

For getting the user ID of the current process:

For getting the command line of process XXX, where XXX is some process number, look at /proc/XXX/cmdline. Although not a real file, it acts like one, in that you can read it. It contains all parts of the command line. Each part is followed by a single NUL character.

Hope this helps.

Hi thank you for your help, the second one works fine, but the first one, cant make it work.

What i really need is the user name as a string, that fuction seems to return something like a int ... uid_t...

Any idea how to solve this issue?

Thank you once again

HW

id -u
i dont know c++ very well but assume it is possible to use bash function - or is this a c function anyway?

Try using the passwd struct for extracting the name as a string:
struct passwd *userpasswd;
userpasswd = getpwuid(getuid());

For more info on the struct:
http://www.mkssoftware.com/docs/man5...t_passwd.5.asp

/Kristofer

The struct task_struct defined in include/linux/sched.h has char comm[TASK_COMM_LEN] which contains the name of the process, to retrieve the filled task_struct for a specific pid you should be able to use find_task_by_pid(int pid)

/Kristofer