NAME | SYNOPSIS | API RESTRICTIONS | DESCRIPTION | RETURN VALUES | ERRORS | ATTRIBUTES | SEE ALSO
#include <unistd.h>pid_t setsid(void);
The function or functions documented here may not be used safely in all application contexts with all APIs provided in the ChorusOS 5.0 product.
See API(5FEA) for details.
The setsid() function creates a new session. The calling process is the session leader of the new session, is the process group leader of a new process group and has no controlling terminal. The calling process is the only process in either the session or the process group.
Upon successful completion, the setsid() function returns the value of the process group ID of the new process group, which is the same as the process ID of the calling process. If an error occurs, setsid() returns -1 and the global variable errno is set to indicate the error.
The getsid() function will fail if:
The calling process is already a process group leader, or the process group ID of a process other than the calling process matches the process ID of the calling process.
See attributes(5) for descriptions of the following attributes:
ATTRIBUTE TYPE | ATTRIBUTE VALUE |
---|---|
Interface Stability | Evolving |
NAME | SYNOPSIS | API RESTRICTIONS | DESCRIPTION | RETURN VALUES | ERRORS | ATTRIBUTES | SEE ALSO