module Process::Sys
TheProcess::Sys module containsUID andGID 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 theProcess,Process::UID, andProcess::GID modules.
Public Class Methods
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static VALUEproc_getegid(VALUE obj){ rb_gid_t egid = getegid(); return GIDT2NUM(egid);}Returns the effective group ID for the current process:
Process.egid# => 500
Not available on all platforms.
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static VALUEproc_geteuid(VALUE obj){ rb_uid_t euid = geteuid(); return UIDT2NUM(euid);}Returns the effective user ID for the current process.
Process.euid# => 501
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static VALUEproc_getgid(VALUE obj){ rb_gid_t gid = getgid(); return GIDT2NUM(gid);}Returns the (real) group ID for the current process:
Process.gid# => 1000
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static VALUEproc_getuid(VALUE obj){ rb_uid_t uid = getuid(); return UIDT2NUM(uid);}Returns the (real) user ID of the current process.
Process.uid# => 1000
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static VALUEp_sys_issetugid(VALUE obj){ return RBOOL(issetugid());}Returnstrue 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.
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static VALUEp_sys_setegid(VALUE obj, VALUE id){ check_gid_switch(); if (setegid(OBJ2GID(id)) != 0) rb_sys_fail(0); return Qnil;}Set the effective group ID of the calling process togroup. Not available on all platforms.
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static VALUEp_sys_seteuid(VALUE obj, VALUE id){ check_uid_switch(); if (seteuid(OBJ2UID(id)) != 0) rb_sys_fail(0); return Qnil;}Set the effective user ID of the calling process touser. Not available on all platforms.
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static VALUEp_sys_setgid(VALUE obj, VALUE id){ check_gid_switch(); if (setgid(OBJ2GID(id)) != 0) rb_sys_fail(0); return Qnil;}Set the group ID of the current process togroup. Not available on all platforms.
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static VALUEp_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;}Sets the (group) real and/or effective group IDs of the current process torid andeid, respectively. A value of-1 for either means to leave that ID unchanged. Not available on all platforms.
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static VALUEp_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;}Sets the (group) real, effective, and saved user IDs of the current process torid,eid, andsid respectively. A value of-1 for any value means to leave that ID unchanged. Not available on all platforms.
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static VALUEp_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;}Sets the (user) real, effective, and saved user IDs of the current process torid,eid, andsid respectively. A value of-1 for any value means to leave that ID unchanged. Not available on all platforms.
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static VALUEp_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;}Sets the (user) real and/or effective user IDs of the current process torid andeid, respectively. A value of-1 for either means to leave that ID unchanged. Not available on all platforms.
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static VALUEp_sys_setrgid(VALUE obj, VALUE id){ check_gid_switch(); if (setrgid(OBJ2GID(id)) != 0) rb_sys_fail(0); return Qnil;}Set the real group ID of the calling process togroup. Not available on all platforms.
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static VALUEp_sys_setruid(VALUE obj, VALUE id){ check_uid_switch(); if (setruid(OBJ2UID(id)) != 0) rb_sys_fail(0); return Qnil;}Set the real user ID of the calling process touser. Not available on all platforms.
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static VALUEp_sys_setuid(VALUE obj, VALUE id){ check_uid_switch(); if (setuid(OBJ2UID(id)) != 0) rb_sys_fail(0); return Qnil;}Set the user ID of the current process touser. Not available on all platforms.