Ubuntu Manpage: getpcaps - List Process Capabilities

Provided by: libcap2-bin_2.32-1ubuntu0.1_amd64

NAME

       getpcaps - List Process Capabilities

SYNOPSIS

       getpcaps <pid> [<pid> ...]

DESCRIPTION

       getpcaps is a simple utility to display the capabilities on the queried process(es).  The capabilities
       are displayed in the cap_from_text(3) format, portions of which are reproduced in the section "TEXTUAL
       REPRESENTATION" below.

TEXTUAL REPRESENTATION

A textual representation of capability sets consists of one or more whitespace-separated clauses. Each
clause specifies some operations on a capability set; the set starts out with all capabilities lowered,
and the meaning of the string is the state of the capability set after all the clauses have been applied
in order.

Each clause consists of a list of comma-separated capability names (or the word `all'), followed by an
action-list. An action-list consists of a sequence of operator flag pairs. Legal operators are: `=',
'+', and `-'. Legal flags are: `e', `i', and `p'. These flags are case-sensitive and specify the
Effective, Inheritable and Permitted sets respectively.

In the capability name lists, all names are case-insensitive. The special name `all' specifies all
capabilities; it is equivalent to a list naming every capability individually.

Unnamed capabilities can also be specified by number. This feature ensures that libcap can support
capabilities that were not allocated at the time libcap was compiled. However, generally upgrading libcap
will add names for recently allocated capabilities.

The `=' operator indicates that the listed capabilities are first reset in all three capability sets.
The subsequent flags (which are optional when associated with this operator) indicate that the listed
capabilities for the corresponding set are to be raised. For example: "all=p" means lower every
capability in the Effective and Inheritable sets but raise all of the Permitted capabilities; or,
"cap_fowner=ep" means raise the Effective and Permitted override-file-ownership capability, while
lowering this Inheritable capability.

In the case that the leading operator is `=', and no list of capabilities is provided, the action-list is
assumed to refer to `all' capabilities. For example, the following three clauses are equivalent to each
other (and indicate a completely empty capability set): "all="; "="; "cap_chown,<every-other-
capability>=".

The operators, `+' and `-' both require an explicit preceding capability list and one or more explicit
trailing flags. The `+' operator will raise all of the listed capabilities in the flagged capability
sets. The `-' operator will lower all of the listed capabilities in the flagged capability sets. For
example: "all+p" will raise all of the Permitted capabilities; "cap_fowner+p-i" will raise the override-
file-ownership capability in the Permitted capability set and lower this Inheritable capability;
"cap_fowner+pe-i" and "cap_fowner=+pe" are equivalent.

FILES

       None

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