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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