.\" Automatically generated by Pod::Man 4.14 (Pod::Simple 3.43) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. \*(C+ will .\" give a nicer C++. Capital omega is used to do unbreakable dashes and .\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff, .\" nothing in troff, for use with C<>. .tr \(*W- .ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' .ie n \{\ . ds -- \(*W- . ds PI pi . if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch . if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch . ds L" "" . ds R" "" . ds C` "" . ds C' "" 'br\} .el\{\ . ds -- \|\(em\| . ds PI \(*p . ds L" `` . ds R" '' . ds C` . ds C' 'br\} .\" .\" Escape single quotes in literal strings from groff's Unicode transform. .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" .\" If the F register is >0, we'll generate index entries on stderr for .\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index .\" entries marked with X<> in POD. Of course, you'll have to process the .\" output yourself in some meaningful fashion. .\" .\" Avoid warning from groff about undefined register 'F'. .de IX .. .nr rF 0 .if \n(.g .if rF .nr rF 1 .if (\n(rF:(\n(.g==0)) \{\ . if \nF \{\ . de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . if !\nF==2 \{\ . nr % 0 . nr F 2 . \} . \} .\} .rr rF .\" .\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2). .\" Fear. Run. Save yourself. No user-serviceable parts. . \" fudge factors for nroff and troff .if n \{\ . ds #H 0 . ds #V .8m . ds #F .3m . ds #[ \f1 . ds #] \fP .\} .if t \{\ . ds #H ((1u-(\\\\n(.fu%2u))*.13m) . ds #V .6m . ds #F 0 . ds #[ \& . ds #] \& .\} . \" simple accents for nroff and troff .if n \{\ . ds ' \& . ds ` \& . ds ^ \& . ds , \& . ds ~ ~ . ds / .\} .if t \{\ . ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" . ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' . ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' . ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' . ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' . ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' .\} . \" troff and (daisy-wheel) nroff accents .ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V' .ds 8 \h'\*(#H'\(*b\h'-\*(#H' .ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#] .ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H' .ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u' .ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#] .ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#] .ds ae a\h'-(\w'a'u*4/10)'e .ds Ae A\h'-(\w'A'u*4/10)'E . \" corrections for vroff .if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u' .if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u' . \" for low resolution devices (crt and lpr) .if \n(.H>23 .if \n(.V>19 \ \{\ . ds : e . ds 8 ss . ds o a . ds d- d\h'-1'\(ga . ds D- D\h'-1'\(hy . ds th \o'bp' . ds Th \o'LP' . ds ae ae . ds Ae AE .\} .rm #[ #] #H #V #F C .\" ======================================================================== .\" .IX Title "REVDEP-PAX 1" .TH REVDEP-PAX 1 "2023-01-24" "elfix 0.9" "Documentation for elfix" .\" For nroff, turn off justification. Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" revdep\-pax \- find mismatching PaX markings between ELF objects and their libraries .SH "SYNOPSIS" .IX Header "SYNOPSIS" \&\fBrevdep-pax\fR \-f [\-v] .PP \&\fBrevdep-pax\fR \-r [\-ve] .PP \&\fBrevdep-pax\fR \-b \s-1OBJECT\s0 [\-myv] .PP \&\fBrevdep-pax\fR \-s \s-1SONAME\s0 [\-myve] .PP \&\fBrevdep-pax\fR \-l \s-1LIBRARY\s0 [\-myve] .PP \&\fBrevdep-pax\fR [\-h] .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&\fBrevdep-pax\fR finds mismatching PaX markings between an \s-1ELF\s0 object and the libraries which that object dynamically links against. When executing an \s-1ELF\s0 binary that links against libraries, the PaX hardened kernel ignores the libraries' markings and uses the executable's markings to enforce PaX restrictions. It is desireable in some circumstances to reverse migrate a library's markings to the binaries that link against it. .PP revdep-pax can either forward migrate PaX markings from an \s-1ELF\s0 object to its libraries, or reverse migrate from a library to all the objects that link against it. The library can either be specified by its \s-1SONAME\s0 as it is reported by \fBldd\fR(1), or by the full path to the \s-1LIBRARY\s0 file. Symbolic links are dereferenced. The user can optionally scan for all forward mappings on the system (\-f), for all reverse mappings (\-r), for forward mappings of just one \&\s-1OBJECT\s0 (\-b), for reverse mappings of just one \s-1SONAME\s0 (\-s) or one \s-1LIBRARY\s0 (\-l). In verbose mode (\-v), all mappings are reported, not just mismatching ones, and in mark mode (\-m), the user is prompted whether to proceed with the migration, so that the PaX flags of the target inherit the flags of the source. .SH "OPTIONS" .IX Header "OPTIONS" .IP "\fB\-f\fR Scan the system for all forward mappings." 4 .IX Item "-f Scan the system for all forward mappings." .PD 0 .IP "\fB\-r\fR Scan the system for all reverse mappings." 4 .IX Item "-r Scan the system for all reverse mappings." .IP "\fB\-b\fR \s-1OBJECT\s0 Retrieve only the forward mappings for this \s-1ELF OBJECT.\s0" 4 .IX Item "-b OBJECT Retrieve only the forward mappings for this ELF OBJECT." .IP "\fB\-s\fR \s-1SONAME\s0 Retrieve only the reverse mappings for this \s-1SONAME.\s0" 4 .IX Item "-s SONAME Retrieve only the reverse mappings for this SONAME." .IP "\fB\-l\fR \s-1LIBRARY\s0 Retrieve only the reverse mappings for this \s-1LIBRARY.\s0" 4 .IX Item "-l LIBRARY Retrieve only the reverse mappings for this LIBRARY." .IP "\fB\-v\fR Report all mappings, not just the mismatched ones." 4 .IX Item "-v Report all mappings, not just the mismatched ones." .ie n .IP "\fB\-e\fR Limit the markings or report to only those executables in the current shell's $PATH." 4 .el .IP "\fB\-e\fR Limit the markings or report to only those executables in the current shell's \f(CW$PATH\fR." 4 .IX Item "-e Limit the markings or report to only those executables in the current shell's $PATH." .IP "\fB\-m\fR Prompt the user to mark the found object with the PaX flags of the source." 4 .IX Item "-m Prompt the user to mark the found object with the PaX flags of the source." .ie n .IP "\fB\-y\fR Assume ""yes"" to all prompts for marking (\s-1USE CAREFULLY\s0!)" 4 .el .IP "\fB\-y\fR Assume ``yes'' to all prompts for marking (\s-1USE CAREFULLY\s0!)" 4 .IX Item "-y Assume yes to all prompts for marking (USE CAREFULLY!)" .IP "\fB\-h\fR Print out a short help message and exit." 4 .IX Item "-h Print out a short help message and exit." .PD .SH "HOMEPAGE" .IX Header "HOMEPAGE" http://www.gentoo.org/proj/en/hardened/pax\-quickstart.xml .SH "REPORTING BUGS" .IX Header "REPORTING BUGS" Please report bugs at http://bugs.gentoo.org. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fBscanelf\fR(1), \fBdumpelf\fR(1), \fBpaxctl\fR(1), \fBpspax\fR(1), \fBfix-gnustack\fR(1), \fBldd\fR(1) .SH "AUTHORS" .IX Header "AUTHORS" \&\fBAnthony G. Basile\fR