RTEMS POSIX API User's Guide
The process environment manager is responsible for providing the functions related to user and group Id management.
The directives provided by the process environment manager are:
getpid - Get Process ID
getppid - Get Parent Process ID
getuid - Get User ID
geteuid - Get Effective User ID
getgid - Get Real Group ID
getegid - Get Effective Group ID
setuid - Set User ID
setgid - Set Group ID
getgroups - Get Supplementary Group IDs
getlogin - Get User Name
getlogin_r - Reentrant Get User Name
getpgrp - Get Process Group ID
setsid - Create Session and Set Process Group ID
setpgid - Set Process Group ID for Job Control
uname - Get System Name
times - Get Process Times
getenv - Get Environment Variables
setenv - Set Environment Variables
ctermid - Generate Terminal Pathname
ttyname - Determine Terminal Device Name
ttyname_r - Reentrant Determine Terminal Device Name
isatty - Determine if File Descriptor is Terminal
sysconf - Get Configurable System Variables
RTEMS POSIX API User's Guide
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