Set the signal mask attribute of a spawn attributes object
#include <spawn.h> int posix_spawnattr_setsigmask( posix_spawnattr_t *_Restrict attrp, const sigset_t *_Restrict sigset_p);
- A pointer to the spawn attributes object that you want to modify.
- A pointer to the signal mask that you want to store.
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The posix_spawnattr_setsigmask() function sets the signal mask attribute in an initialized attributes object referenced by attrp. You must have already initialized the spawn attributes object by calling posix_spawnattr_init() .
The value of this attribute is used as the signal mask in the new process image of a spawn operation if POSIX_SPAWN_SETSIGMASK is set in the spawn flags attribute; to set this flag, call the POSIX function posix_spawnattr_setflags() , or the QNX Neutrino function posix_spawnattr_setxflags() . By default, the mask is an empty signal set.
To retrieve the current value of this attribute, call posix_spawnattr_getsigmask() .
For more information about spawn attributes, see the entry for posix_spawn() .
- Upon successful completion, the posix_spawnattr_setsigmask() function returns zero.
- An argument was invalid.