UNAME(2) System Calls UNAME(2)
NAME
uname - get name of current operating system
SYNOPSIS
#include <sys/utsname.h>
int uname(
struct utsname *name);
DESCRIPTION
The
uname() function stores information identifying the current
operating system in the structure pointed to by
name.
The
uname() function uses the
utsname structure, defined in
<
sys/utsname.h>, whose members include:
char sysname[SYS_NMLN];
char nodename[SYS_NMLN];
char release[SYS_NMLN];
char version[SYS_NMLN];
char machine[SYS_NMLN];
The
uname() function returns a null-terminated character string
naming the current operating system in the character array
sysname.
Similarly, the
nodename member contains the name by which the system
is known on a communications network. The
release and
version members
further identify the operating system. The
machine member contains a
standard name that identifies the hardware on which the operating
system is running.
RETURN VALUES
Upon successful completion, a non-negative value is returned.
Otherwise,
-1 is returned and
errno is set to indicate the error.
ERRORS
The
uname() function will fail if:
EFAULT The
name argument points to an illegal address.
ATTRIBUTES
See
attributes(7) for descriptions of the following attributes:
+--------------------+-------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-------------------+
|Interface Stability | Standard |
+--------------------+-------------------+
|MT-Level | Async-Signal-Safe |
+--------------------+-------------------+
SEE ALSO
uname(1),
sysinfo(2),
sysconf(3C),
attributes(7),
standards(7) July 21, 1999 UNAME(2)
