posix_spawnattr_getpgroup, posix_spawnattr_setpgroup - get and set the spawn-pgroup attribute of a spawn attributes object (ADVANCED REALTIME)
[SPN] #include <spawn.h>
int posix_spawnattr_getpgroup(const posix_spawnattr_t *restrict attr,
pid_t *restrict pgroup);
int posix_spawnattr_setpgroup(posix_spawnattr_t *attr, pid_t pgroup);
The posix_spawnattr_getpgroup() function shall obtain the value of the spawn-pgroup attribute from the attributes object referenced by attr.
The posix_spawnattr_setpgroup() function shall set the spawn-pgroup attribute in an initialized attributes object referenced by attr.
The spawn-pgroup attribute represents the process group to be joined by the new process image in a spawn operation (if POSIX_SPAWN_SETPGROUP is set in the spawn-flags attribute). The default value of this attribute shall be zero.
Upon successful completion, posix_spawnattr_getpgroup() shall return zero and store the value of the spawn-pgroup attribute of attr into the object referenced by the pgroup parameter; otherwise, an error number shall be returned to indicate the error.
Upon successful completion, posix_spawnattr_setpgroup() shall return zero; otherwise, an error number shall be returned to indicate the error.
These functions may fail if:
- The value specified by attr is invalid.
The posix_spawnattr_setpgroup() function may fail if:
- The value of the attribute being set is not valid.
These functions are part of the Spawn option and need not be provided on all implementations.
posix_spawn(), posix_spawnattr_destroy(), posix_spawnattr_init(), posix_spawnattr_getsigdefault(), posix_spawnattr_getflags(), posix_spawnattr_getschedparam(), posix_spawnattr_getschedpolicy(), posix_spawnattr_getsigmask(), posix_spawnattr_setsigdefault(), posix_spawnattr_setflags(), posix_spawnattr_setschedparam(), posix_spawnattr_setschedpolicy(), posix_spawnattr_setsigmask(), posix_spawnp(), the Base Definitions volume of IEEE Std 1003.1-2001, <spawn.h>
First released in Issue 6. Derived from IEEE Std 1003.1d-1999.