svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.
ulimit(2)
ulimit(2) System Calls ulimit(2)
NAME
ulimit - get and set process limits
SYNOPSIS
#include <ulimit.h>
long ulimit(int cmd, /* newlimit */...);
DESCRIPTION
The ulimit() function provides for control over process limits. It is
provided for compatibility with older System V systems and is not rec‐
ommended for use in new software.
The cmd values, defined in <ulimit.h>, include:
UL_GETFSIZE Return the soft file size limit of the process. The
limit is in units of 512-byte blocks and is inherited by
child processes. Files of any size can be read. The re‐
turn value is the integer part of the soft file size
limit divided by 512. If the result cannot be repre‐
sented as a long int, the result is unspecified.
UL_SETFSIZE Set the hard and soft file size limits for output opera‐
tions of the process to the value of the second argu‐
ment, taken as a long int. Any process may decrease its
own hard limit, but only a process with appropriate
privileges may increase the limit. The new file size
limit is returned. The hard and soft file size limits
are set to the specified value multiplied by 512. If the
result would overflow an rlim_t, the actual value set is
unspecified.
UL_GMEMLIM Get the maximum possible break value (see brk(2)).
UL_GDESLIM Get the current value of the maximum number of open
files per process configured in the system.
RETURN VALUES
Upon successful completion, ulimit() returns the value of the requested
limit. Otherwise, −1 is returned, the limit is not changed, and errno
is set to indicate the error.
ERRORS
The ulimit() function will fail if:
EINVAL The cmd argument is not valid.
EPERM A process that has not asserted {PRIV_SYS_RESOURCE} in its
effective set is trying to increase its file size limit.
USAGE
Since all return values are permissible in a successful situation, an
application wishing to check for error situations should set errno to
0, then call ulimit(), and if it returns −1, check if errno is non-
zero.
The standard getrlimit() and setrlimit() functions, and the Solaris-
specific resource control facility, provide a more general interface
for controlling process limits, and are preferred over ulimit(). See
getrlimit(2) and resource-controls(7).
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ Interface StabilityCommitted _ StandardSee below.
The POSIX.1-2008 and XPG7 standards have declared ulimit() to be Obso‐
lescent, and it may be removed from future versions of these standards.
SEE ALSO
brk(2), getrlimit(2), write(2), privileges(7), attributes(7), resource-
controls(7), standards(7)
HISTORY
The ulimit() function has been included in all Sun and Oracle releases
of Solaris.
Oracle Solaris 11.4 30 Jan 2023 ulimit(2)