Query: grantpt
OS: osf1
Section: 3
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
grantpt(3) Library Functions Manual grantpt(3)NAMEgrantpt - Permits access to the slave pseudoterminal deviceLIBRARYStandard C Library (libc.so, libc.a)SYNOPSIS#include <stdlib.h> int grantpt( int fildes);STANDARDSInterfaces documented on this reference page conform to industry standards as follows: grantpt(): XPG4-UNIX Refer to the standards(5) reference page for more information about industry standards and associated tags.PARAMETERSSpecifies a file descriptor that is returned from a successful open of a master pseudoterminal device.DESCRIPTIONThe grantpt() function modifies the ownership and mode of the slave pseudoterminal device associated with its master pseudoterminal coun- terpart. The modifications of mode and ownership are performed as follows: The group ID is set to a reserved group. The slave user ID is set to the real UID of the calling process. The permissions of the slave device are set so that the owner is allowed read and write access and the group is allowed write access.RETURN VALUESUpon successful completion, the grantpt() function returns a value of 0 (zero). Otherwise, it returns a value of -1 and sets errno to indi- cate the error.ERRORSThe grantpt() function sets errno to the specified values for the following conditions: The corresponding slave device cannot be accessed. The file descriptor specified by the fildes parameter is not a valid open file descrip- tor. The file descriptor specified by the fildes parameter is not associated with a master device. The grantpt() function may also fail if the application has installed a signal handler to catch SIGCHLD (death of a child) signals. Applications calling grantpt() may get a SIGCHLD signal from processes that they did not explicitly create.RELATED INFORMATIONFunctions: open(2), ptsname(3), setuid(2), unlockpt(3) Standards: standards(5) delim off grantpt(3)
Related Man Pages |
---|
grantpt(3) - freebsd |
grantpt(3) - v7 |
grantpt(3) - x11r4 |
grantpt(3) - opendarwin |
grantpt(3) - bsd |
Similar Topics in the Unix Linux Community |
---|
terminal problem |
Problem with 'ghosted' logins. |
Pseudo-Terminal Programming-Extra newline |
read system call reading the same data |