Comtrol eCos - Manual (Page 457)

Chapter 31. POSIX Standard Support
int isatty( int fd );
long sysconf( int name );
Functions Omitted
pid_t getpid( void );
pid_t getppid( void );
uid_t getuid( void );
uid_t geteuid( void );
gid_t getgid( void );
gid_t getegid( void );
int setuid( uid_t uid );
int setgid( gid_t gid );
int getgroups( int gidsetsize, gid_t grouplist[] );
char ∗ getlogin( void );
int getlogin_r( char ∗ name, size_t namesize );
pid_t getpgrp( void );
pid_t setsid( void );
int setpgid( pid_t pid, pid_t pgid );
char ∗ ctermid( char ∗ s);
char ∗ ttyname( int fd ); // TBA
int ttyname_r( int fd, char ∗ name, size_t namesize); // TBA
clock_t times( struct tms ∗ buffer ); // TBA
Notes
• The fields of the utsname structure are initialized as follows:
sysname “eCos”
nodename “” (gethostname() is currently not available)
release Major version number of the kernel
version Minor version number of the kernel
machine “” (Requires some config tool changes)
The sizes of these strings are defined by CYG_POSIX_UTSNAME_LENGTH and
CYG_POSIX_UTSNAME_NODENAME_LENGTH. The latter defaults to the value of the former, but may
also be set independently to accommodate a longer node name.
• The time() function is currently implemented in the C library.
• A set of environment strings may be defined at configuration time with the
CYGDAT_LIBC_DEFAULT_ENVIRONMENT option. The application may also define an environment by
direct assignment to the environ variable.
• At present isatty() assumes that any character device is a tty and that all other devices are not ttys. Since the
only kind of device that eCos currently supports is serial character devices, this is an adequate distinction.
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