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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

.geteuidInteger (readonly, mod_func)

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

Process.euid # => 501

.getgidInteger (readonly, mod_func)

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

Process.gid # => 1000

.getuidInteger (readonly, mod_func)

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

Process.uid # => 1000

Class Method Details

.getegidInteger (mod_func)

Alias for GID.eid. Returns the effective group ID for the current process:

Process.egid # => 500

Not available on all platforms.

.issetugidBoolean (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 6645

static VALUE
p_sys_issetugid(VALUE obj)
{
    return RBOOL(issetugid());
}

.setegid(group) ⇒ nil (mod_func)

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

[ GitHub ]

  
# File 'process.c', line 6566

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.

[ GitHub ]

  
# File 'process.c', line 6182

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.

[ GitHub ]

  
# File 'process.c', line 6522

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.

[ GitHub ]

  
# File 'process.c', line 6590

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.

[ GitHub ]

  
# File 'process.c', line 6616

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.

[ GitHub ]

  
# File 'process.c', line 6235

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.

[ GitHub ]

  
# File 'process.c', line 6206

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.

[ GitHub ]

  
# File 'process.c', line 6544

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 6160

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.

[ GitHub ]

  
# File 'process.c', line 6138

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