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Module: Process::Sys

Relationships & Source Files
Defined in: process.c

Overview

The Sys module contains UID and GID functions which provide direct bindings to the system calls of the same names instead of the more-portable versions of the same functionality found in the ::Process, UID, and GID modules.

Class Attribute Summary

Class Method Summary

Class Attribute Details

.geteuid ⇒ Integer (readonly, mod_func)

Alias for UID.eid. Returns the effective user ID for this process.

Process.euid   #=> 501

.getgid ⇒ Integer (readonly, mod_func)

Alias for GID.rid. Returns the (real) group ID for this process.

Process.gid   #=> 500

.getuid ⇒ Integer (readonly, mod_func)

Alias for UID.rid. Returns the (real) user ID of this process.

Process.uid   #=> 501

Class Method Details

.getegid ⇒ Integer (mod_func)

Alias for GID.eid. Returns the effective group ID for this process. Not available on all platforms.

Process.egid   #=> 500

.issetugid ⇒ Boolean (mod_func)

Returns true if the process was created as a result of an execve(2) system call which had either of the setuid or setgid bits set (and extra privileges were given as a result) or if it has changed any of its real, effective or saved user or group IDs since it began execution.

[ GitHub ] 

  


# File 'process.c', line 6664



static VALUE
p_sys_issetugid(VALUE obj)
{
    if (issetugid()) {
	return Qtrue;
    }
    else {
	return Qfalse;
    }
}


  








  

    .setegid(group)  ⇒ nil  (mod_func)  



  

    

Set the effective group ID of the calling process to group.  Not available on all platforms.


  



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# File 'process.c', line 6585



static VALUE
p_sys_setegid(VALUE obj, VALUE id)
{
    check_gid_switch();
    if (setegid(OBJ2GID(id)) != 0) rb_sys_fail(0);
    return Qnil;
}


  








  

    .seteuid(user)  ⇒ nil  (mod_func)  



  

    

Set the effective user ID of the calling process to user.  Not available on all platforms.


  



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# File 'process.c', line 6205



static VALUE
p_sys_seteuid(VALUE obj, VALUE id)
{
    check_uid_switch();
    if (seteuid(OBJ2UID(id)) != 0) rb_sys_fail(0);
    return Qnil;
}


  








  

    .setgid(group)  ⇒ nil  (mod_func)  



  

    

Set the group ID of the current process to group. Not available on all platforms.


  



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# File 'process.c', line 6541



static VALUE
p_sys_setgid(VALUE obj, VALUE id)
{
    check_gid_switch();
    if (setgid(OBJ2GID(id)) != 0) rb_sys_fail(0);
    return Qnil;
}


  








  

    .setregid(rid, eid)  ⇒ nil  (mod_func)  



  

    

Sets the (group) real and/or effective group IDs of the current process to rid and eid, respectively. A value of -1 for either means to leave that ID unchanged. Not available on all platforms.


  



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# File 'process.c', line 6609



static VALUE
p_sys_setregid(VALUE obj, VALUE rid, VALUE eid)
{
    rb_gid_t rgid, egid;
    check_gid_switch();
    rgid = OBJ2GID(rid);
    egid = OBJ2GID(eid);
    if (setregid(rgid, egid) != 0) rb_sys_fail(0);
    return Qnil;
}


  








  

    .setresgid(rid, eid, sid)  ⇒ nil  (mod_func)  



  

    

Sets the (group) real, effective, and saved user IDs of the current process to rid, eid, and sid respectively. A value of -1 for any value means to leave that ID unchanged. Not available on all platforms.


  



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# File 'process.c', line 6635



static VALUE
p_sys_setresgid(VALUE obj, VALUE rid, VALUE eid, VALUE sid)
{
    rb_gid_t rgid, egid, sgid;
    check_gid_switch();
    rgid = OBJ2GID(rid);
    egid = OBJ2GID(eid);
    sgid = OBJ2GID(sid);
    if (setresgid(rgid, egid, sgid) != 0) rb_sys_fail(0);
    return Qnil;
}


  








  

    .setresuid(rid, eid, sid)  ⇒ nil  (mod_func)  



  

    

Sets the (user) real, effective, and saved user IDs of the current process to rid, eid, and sid respectively. A value of -1 for any value means to leave that ID unchanged. Not available on all platforms.


  



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# File 'process.c', line 6258



static VALUE
p_sys_setresuid(VALUE obj, VALUE rid, VALUE eid, VALUE sid)
{
    rb_uid_t ruid, euid, suid;
    PREPARE_GETPWNAM;
    check_uid_switch();
    ruid = OBJ2UID1(rid);
    euid = OBJ2UID1(eid);
    suid = OBJ2UID1(sid);
    FINISH_GETPWNAM;
    if (setresuid(ruid, euid, suid) != 0) rb_sys_fail(0);
    return Qnil;
}


  








  

    .setreuid(rid, eid)  ⇒ nil  (mod_func)  



  

    

Sets the (user) real and/or effective user IDs of the current process to rid and eid, respectively. A value of -1 for either means to leave that ID unchanged. Not available on all platforms.


  



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# File 'process.c', line 6229



static VALUE
p_sys_setreuid(VALUE obj, VALUE rid, VALUE eid)
{
    rb_uid_t ruid, euid;
    PREPARE_GETPWNAM;
    check_uid_switch();
    ruid = OBJ2UID1(rid);
    euid = OBJ2UID1(eid);
    FINISH_GETPWNAM;
    if (setreuid(ruid, euid) != 0) rb_sys_fail(0);
    return Qnil;
}


  








  

    .setrgid(group)  ⇒ nil  (mod_func)  



  

    

Set the real group ID of the calling process to group. Not available on all platforms.


  



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# File 'process.c', line 6563



static VALUE
p_sys_setrgid(VALUE obj, VALUE id)
{
    check_gid_switch();
    if (setrgid(OBJ2GID(id)) != 0) rb_sys_fail(0);
    return Qnil;
}


  








  

    .setruid(user)  ⇒ nil  (mod_func)  



  

    

Set the real user ID of the calling process to user. Not available on all platforms.


  



  [ GitHub ]


  

  


# File 'process.c', line 6183



static VALUE
p_sys_setruid(VALUE obj, VALUE id)
{
    check_uid_switch();
    if (setruid(OBJ2UID(id)) != 0) rb_sys_fail(0);
    return Qnil;
}


  








  

    .setuid(user)  ⇒ nil  (mod_func)  



  

    

Set the user ID of the current process to user. Not available on all platforms.


  



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# File 'process.c', line 6161



static VALUE
p_sys_setuid(VALUE obj, VALUE id)
{
    check_uid_switch();
    if (setuid(OBJ2UID(id)) != 0) rb_sys_fail(0);
    return Qnil;
}