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dlopen(3): mention fdlopen for capsicum(4)

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Capsicum-sandboxed applications generally cannot use dlopen, as absolute
and cwd-relative paths cannot be accessed.  Mention that fdlopen is
useful for sandboxed applications.

PR:		277169
Reviewed by:	markj, oshogbo
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D45108

(cherry picked from commit d84fd89ecd)
This commit is contained in:
Ed Maste 2024-05-06 21:45:50 -04:00
parent ddabe1d3c5
commit f2109683ce
1 changed files with 5 additions and 3 deletions
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8
lib/libc/gen/dlopen.3
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@ -29,9 +29,7 @@
.\"
.\" Copyright (c) 1991 Sun Microsystems, Inc.
.\"
.\" @(#) dlopen.3 1.6 90/01/31 SMI
.\"
.Dd May 14, 2020
.Dd May 7, 2024
.Dt DLOPEN 3
.Os
.Sh NAME
@ -201,6 +199,10 @@ The
function can be used by the code that needs to perform
additional checks on the loaded objects, to prevent races with
symlinking or renames.
Applications sandboxed using
.Xr capsicum 4
can also make beneficial use of
.Fn fdlopen .
.Pp
The
.Fn dlsym