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$FreeBSD: stable/11/lib/libcapsicum/capsicum_helpers.3 331434 2018-03-23 16:15:07Z ian $
.Dd October 21, 2016 .Dt CAPSICUM_HELPERS 3 .Os .Sh NAME .Nm caph_limit_stream , .Nm caph_limit_stdin , .Nm caph_limit_stderr , .Nm caph_limit_stdout , .Nm caph_limit_stdio , .Nm caph_cache_tzdata , .Nm caph_cache_catpages .Nd "set of the functions , part of the libcapsicum" .Sh LIBRARY .Lb libcapsicum .Sh SYNOPSIS n capsicum_helpers.h .Ft int .Fn caph_limit_stream "int fd, int flags" .Ft int .Fn caph_limit_stdin "void" .Ft int .Fn caph_limit_stderr "void" .Ft int .Fn caph_limit_stdout "void" .Ft int .Fn caph_limit_stdio "void" .Ft void .Fn caph_cache_tzdata "void" .Ft void .Fn caph_cache_catpages "void" .Sh DESCRIPTION The .Nm capsicum helpers are a set of a inline functions which simplify modifying programs to use Capsicum. The goal is to reduce duplicated code patterns. The .Nm capsicum helpers are part of .Nm libcapsicum but there is no need to link to the library.
p .Fn caph_limit_stream restricts capabilities on .Fa fd to only those needed by POSIX stream objects (that is, FILEs).
p These flags can be provided:
p l -tag -width "CAPH_IGNORE_EBADF" -compact -offset indent t Dv CAPH_IGNORE_EBADF Do not return an error if file descriptor is invalid. t Dv CAPH_READ Set CAP_READ on limited descriptor. t Dv CAPH_WRITE Set CAP_WRITE on limited descriptor. .El
p .Fn caph_limit_stdin , .Fn caph_limit_stderr and .Fn caph_limit_stdout limit standard descriptors using the .Nm caph_limit_stream function.
p .Fn caph_limit_stdio limits stdin, stderr and stdout.
p .Fn caph_cache_tzdata precaches all timezone data needed to use .Li libc local time functions.
p .Fn caph_cache_catpages caches Native Language Support (NLS) data. NLS data is used for localized error printing by .Xr strerror 3 and .Xr err 3 , among others. .Ed .Sh SEE ALSO .Xr cap_enter 2 , .Xr rights 4