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Is there a way to identify the user who owns a process from /proc/PID

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1

I am parsing process details out of /proc/PID and I am so far unable to find who owns a process from that meta directory's files.

Documentation does not seem to point to that info as well:

linux

share|improve this question

edited Jul 14 '16 at 6:00

Dmitri Chubarov

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asked Jul 14 '16 at 5:47

gextragextra

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add a comment | 

1

I am parsing process details out of /proc/PID and I am so far unable to find who owns a process from that meta directory's files.

Documentation does not seem to point to that info as well:

linux

share|improve this question

edited Jul 14 '16 at 6:00

Dmitri Chubarov

11.6k33 gold badges2626 silver badges5656 bronze badges

asked Jul 14 '16 at 5:47

gextragextra

4,16466 gold badges2828 silver badges5050 bronze badges

add a comment | 

I am parsing process details out of /proc/PID and I am so far unable to find who owns a process from that meta directory's files.

Documentation does not seem to point to that info as well:

linux

share|improve this question

edited Jul 14 '16 at 6:00

Dmitri Chubarov

11.6k33 gold badges2626 silver badges5656 bronze badges

asked Jul 14 '16 at 5:47

gextragextra

4,16466 gold badges2828 silver badges5050 bronze badges

share|improve this question

edited Jul 14 '16 at 6:00

Dmitri Chubarov

11.6k33 gold badges2626 silver badges5656 bronze badges

asked Jul 14 '16 at 5:47

gextragextra

4,16466 gold badges2828 silver badges5050 bronze badges

share|improve this question

edited Jul 14 '16 at 6:00

Dmitri Chubarov

11.6k33 gold badges2626 silver badges5656 bronze badges

asked Jul 14 '16 at 5:47

gextragextra

4,16466 gold badges2828 silver badges5050 bronze badges

edited Jul 14 '16 at 6:00

Dmitri Chubarov

11.6k33 gold badges2626 silver badges5656 bronze badges

edited Jul 14 '16 at 6:00

Dmitri Chubarov

11.6k33 gold badges2626 silver badges5656 bronze badges

asked Jul 14 '16 at 5:47

gextragextra

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asked Jul 14 '16 at 5:47

gextragextra

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2 Answers
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2

The owner of the process is the owner of all files in the /proc/PID directory.

$ ls -l /proc/27595
total 0
dr-xr-xr-x 2 me users 0 Jul 14 11:53 attr
-r-------- 1 me users 0 Jul 14 11:53 auxv
...

Also the file /proc/PID/loginuid holds the UID of the owner of the process.

$ cat /proc/27595/loginuid
1000

share|improve this answer

edited Jul 14 '16 at 6:00

answered Jul 14 '16 at 5:55

Dmitri ChubarovDmitri Chubarov

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add a comment | 

0

The owner of the files in /proc/[pid]/ is not always the user -- programs can e.g. make themselves "non-dumpable" to avoid leaking sensitive information if they become another user, and then the file ownership of the files in the directory can change to root.

But normally the UID of the process can be retrieved by an fstat call (or a stat command ) on the /proc/[pid] directory itself.

share|improve this answer

answered Mar 25 at 20:30

Alexis CouseinAlexis Cousein

2611 bronze badge

add a comment | 

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2

The owner of the process is the owner of all files in the /proc/PID directory.

$ ls -l /proc/27595
total 0
dr-xr-xr-x 2 me users 0 Jul 14 11:53 attr
-r-------- 1 me users 0 Jul 14 11:53 auxv
...

Also the file /proc/PID/loginuid holds the UID of the owner of the process.

$ cat /proc/27595/loginuid
1000

share|improve this answer

edited Jul 14 '16 at 6:00

answered Jul 14 '16 at 5:55

Dmitri ChubarovDmitri Chubarov

11.6k33 gold badges2626 silver badges5656 bronze badges

add a comment | 

2

The owner of the process is the owner of all files in the /proc/PID directory.

$ ls -l /proc/27595
total 0
dr-xr-xr-x 2 me users 0 Jul 14 11:53 attr
-r-------- 1 me users 0 Jul 14 11:53 auxv
...

Also the file /proc/PID/loginuid holds the UID of the owner of the process.

$ cat /proc/27595/loginuid
1000

share|improve this answer

edited Jul 14 '16 at 6:00

answered Jul 14 '16 at 5:55

Dmitri ChubarovDmitri Chubarov

11.6k33 gold badges2626 silver badges5656 bronze badges

add a comment | 

The owner of the process is the owner of all files in the /proc/PID directory.

$ ls -l /proc/27595
total 0
dr-xr-xr-x 2 me users 0 Jul 14 11:53 attr
-r-------- 1 me users 0 Jul 14 11:53 auxv
...

Also the file /proc/PID/loginuid holds the UID of the owner of the process.

$ cat /proc/27595/loginuid
1000

share|improve this answer

edited Jul 14 '16 at 6:00

answered Jul 14 '16 at 5:55

Dmitri ChubarovDmitri Chubarov

11.6k33 gold badges2626 silver badges5656 bronze badges

$ ls -l /proc/27595
total 0
dr-xr-xr-x 2 me users 0 Jul 14 11:53 attr
-r-------- 1 me users 0 Jul 14 11:53 auxv
...

$ cat /proc/27595/loginuid
1000

share|improve this answer

edited Jul 14 '16 at 6:00

answered Jul 14 '16 at 5:55

Dmitri ChubarovDmitri Chubarov

11.6k33 gold badges2626 silver badges5656 bronze badges

answered Jul 14 '16 at 5:55

Dmitri ChubarovDmitri Chubarov

11.6k33 gold badges2626 silver badges5656 bronze badges

answered Jul 14 '16 at 5:55

Dmitri ChubarovDmitri Chubarov

11.6k33 gold badges2626 silver badges5656 bronze badges

0

The owner of the files in /proc/[pid]/ is not always the user -- programs can e.g. make themselves "non-dumpable" to avoid leaking sensitive information if they become another user, and then the file ownership of the files in the directory can change to root.

But normally the UID of the process can be retrieved by an fstat call (or a stat command ) on the /proc/[pid] directory itself.

share|improve this answer

answered Mar 25 at 20:30

Alexis CouseinAlexis Cousein

2611 bronze badge

add a comment | 

0

The owner of the files in /proc/[pid]/ is not always the user -- programs can e.g. make themselves "non-dumpable" to avoid leaking sensitive information if they become another user, and then the file ownership of the files in the directory can change to root.

But normally the UID of the process can be retrieved by an fstat call (or a stat command ) on the /proc/[pid] directory itself.

share|improve this answer

answered Mar 25 at 20:30

Alexis CouseinAlexis Cousein

2611 bronze badge

add a comment | 

The owner of the files in /proc/[pid]/ is not always the user -- programs can e.g. make themselves "non-dumpable" to avoid leaking sensitive information if they become another user, and then the file ownership of the files in the directory can change to root.

But normally the UID of the process can be retrieved by an fstat call (or a stat command ) on the /proc/[pid] directory itself.

share|improve this answer

answered Mar 25 at 20:30

Alexis CouseinAlexis Cousein

2611 bronze badge

share|improve this answer

answered Mar 25 at 20:30

Alexis CouseinAlexis Cousein

2611 bronze badge

answered Mar 25 at 20:30

Alexis CouseinAlexis Cousein

2611 bronze badge

answered Mar 25 at 20:30

Alexis CouseinAlexis Cousein

2611 bronze badge