Open System Services System Calls Reference Manual (G06.25+, H06.03+)

msgget(2) OSS System Calls Reference Manual

ERRORS

If any of the following conditions occurs, the msgget() function sets errno to the value that

corresponds to the condition.

[EACCES] A message queue identiﬁer exists for the key parameter but operation permis-

sion, which is speciﬁed by the low-order nine bits of the msgﬂg parameter, is not

granted.

[EEXIST] A message queue identiﬁer exists for the key parameter, and both IPC_CREAT

and IPC_EXCL are set.

[EFAULT] The msqid_ds structure associated with the message queue identiﬁer cannot be

found.

[EINVAL] One of the following conditions exists:

• All processes for the relevant message server have failed.

• The message queue corresponding to the message queue identi

ﬁer asso-

ciated with the key parameter has been removed from the system.

[EMSGQNOTRUNNING]

The message queue server associated with the message queue identiﬁer is not

running.

[ENOENT] A message queue identiﬁer does not exist for the key parameter and the

IPC_CREAT value is not set.

[ENOSPC] A message queue identiﬁer cannot be created because the system-imposed limit

on the maximum number of allowed message queue identiﬁers would be

exceeded.

[ENOTOSS] The calling process is not an OSS process. The requested operation cannot be

performed from the Guardian environment.

RELATED INFORMATION

Commands: ipcrm(1), ipcs(1).

Functions: ftok(3), msgctl(2), msgrcv(2), msgsnd(2).

STANDARDS CONFORMANCE

The following are HP extensions to the XPG4 Version 2 speciﬁcation:

• The errno values [EFAULT], [EINVAL], [EMSGQNOTRUNNING], and [ENOTOSS]

can be returned.

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