diff options
Diffstat (limited to 'manual/users.texi')
| -rw-r--r-- | manual/users.texi | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/manual/users.texi b/manual/users.texi index 9b5e1ce9b5..b1d0d6f929 100644 --- a/manual/users.texi +++ b/manual/users.texi @@ -1,4 +1,4 @@ -@node Users and Groups, System Information, Job Control, Top +@node Users and Groups, System Information, Name Service Switch, Top @chapter Users and Groups Every user who can log in on the system is identified by a unique number @@ -87,7 +87,7 @@ for purposes of access control. These IDs are also called the @dfn{effective user ID} and @dfn{effective group ID} of the process. Your login shell starts out with a persona which consists of your user -ID and your default group ID. +ID and your default group ID. @c !!! also supplementary group IDs. In normal circumstances, all your other processes inherit these values. @@ -367,7 +367,7 @@ The return values and error conditions for @code{setregid} are the same as those for @code{setreuid}. @end deftypefun -The GNU system also lets privileged processes change their supplementary +The GNU system also lets privileged processes change their supplementary group IDs. To use @code{setgroups} or @code{initgroups}, your programs should include the header file @file{grp.h}. @pindex grp.h @@ -417,14 +417,14 @@ user_user_id = getuid (); game_user_id = geteuid (); @end smallexample -Then it can turn off game file access with +Then it can turn off game file access with @smallexample setuid (user_user_id); @end smallexample @noindent -and turn it on with +and turn it on with @smallexample setuid (game_user_id); @@ -478,7 +478,7 @@ file will be installed with the set-user-ID bit set and owned by the same user as the @file{scores} file. Typically, a system administrator will set up an account like @code{games} for this purpose. -The executable file is given mode @code{4755}, so that doing an +The executable file is given mode @code{4755}, so that doing an @samp{ls -l} on it produces output like: @smallexample @@ -608,7 +608,7 @@ record_score (int score) @node Tips for Setuid @section Tips for Writing Setuid Programs -It is easy for setuid programs to give the user access that isn't +It is easy for setuid programs to give the user access that isn't intended---in fact, if you want to avoid this, you need to be careful. Here are some guidelines for preventing unintended access and minimizing its consequences when it does occur: @@ -731,7 +731,7 @@ are declared in the header file @file{pwd.h}. @comment pwd.h @comment POSIX.1 @deftp {Data Type} {struct passwd} -The @code{passwd} data structure is used to hold information about +The @code{passwd} data structure is used to hold information about entries in the system user data base. It has at least the following members: @table @code @@ -887,7 +887,7 @@ database are declared in the header file @file{grp.h}. @comment grp.h @comment POSIX.1 -@deftp {Data Type} {struct group} +@deftp {Data Type} {struct group} The @code{group} structure is used to hold information about an entry in the system group database. It has at least the following members: |