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Diffstat (limited to 'man/man1/newgidmap.1')
| -rw-r--r-- | man/man1/newgidmap.1 | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/man/man1/newgidmap.1 b/man/man1/newgidmap.1 index c60cf7f..7328aef 100644 --- a/man/man1/newgidmap.1 +++ b/man/man1/newgidmap.1 @@ -2,12 +2,12 @@ .\" Title: newgidmap .\" Author: Eric Biederman .\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> -.\" Date: 11/08/2022 +.\" Date: 06/21/2024 .\" Manual: User Commands -.\" Source: shadow-utils 4.13 +.\" Source: shadow-utils 4.15.2 .\" Language: English .\" -.TH "NEWGIDMAP" "1" "11/08/2022" "shadow\-utils 4\&.13" "User Commands" +.TH "NEWGIDMAP" "1" "06/21/2024" "shadow\-utils 4\&.15\&.2" "User Commands" .\" ----------------------------------------------------------------- .\" * Define some portability stuff .\" ----------------------------------------------------------------- @@ -74,6 +74,16 @@ before setting /proc/[pid]/gid_map\&. .PP Note that newgidmap may be used only once for a given process\&. +.PP +Instead of an integer process id, the first argument may be specified as +\fIfd:N\fR, where the integer N is the file descriptor number for the calling process\*(Aqs opened file descriptor for the directory +/proc/[pid]\&. In this case, +\fBnewgidmap\fR +will use +openat(2) +to open the +gid_map +file under that directory, avoiding a TOCTTOU in case the process exits and the pid is immediately reused\&. .SH "OPTIONS" .PP There currently are no options to the |