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Facilité d'utilisation
msgsnd
Implementation
Considerations
If
a
pro cess
susp ended
during
execution
of
msgsnd()
receiv
es
a
signal,
con
trol
returns
to
the
user
with
errno
set
to
EINTR .
Disabled
signals
are
ignored.
Errors
If
an
error
o ccurs,
errno
is
set
to
one
of
the
follo wing
v
alues.
EACCES
CA
USE
The
calling
pro
cess
do
es
not
have
p
ermission.
A
CTION
Ensure
that
the
calling
pro
cess
has
write
p
ermission
for
the
message
queue.
EAGAIN
CA
USE
msg g
sp
ecies
IPC_NOWAIT
and
either
the
num
b
er
of
bytes
passed
w
ould
cause
the
size
of
the
sp
ecied
queue
to
exceed
the
system-dened
limit,
the
total
size
of
message
data
on
this
queue
w
ould
exceed
the
system-dened
limit,
or
the
system-wide
message
buer
p
o
ol
is
temp
orarily
depleted
due
to
the
amount
of
data
queued
to
all
message
queues.
A
CTION
None.
Application
dep
enden
t.
The
send
op
eration
can
b
e
retried
later.
EFAULT
CA
USE
The
system
detected
a
NULL
or
bad
address
in
attempting
to
use
the
msgp
argument.
A
CTION
Check
to
see
if
the
p
ointer
is
correctly
initialized.
EIDRM
CA
USE
The
message
queue
sp
ecied
by
msqid
w
as
removed
while
msgsnd()
w
as
w
aiting
on
a
message.
A
CTION
None.
EINTR
CA
USE
msgsnd()
w
as
interrupted
by
a
signal.
A
CTION
None.
Application
dep
enden
t.
SVID
IPC
Library
2-21
Function
Descriptions
FINAL
TRIM
SIZE
:
7.0
in
x
8.5
in
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