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OpenSolaris 2009.06 - man page for uname (opensolaris section 2)

uname(2)							   System Calls 							  uname(2)

uname - get name of current operating system
#include <sys/utsname.h> int uname(struct utsname *name);
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. Simi- larly, the nodename member contains the name by which the system is known on a communications network. The release and version members fur- ther identify the operating system. The machine member contains a standard name that identifies the hardware on which the operating system is running.
Upon successful completion, a non-negative value is returned. Otherwise, -1 is returned and errno is set to indicate the error.
The uname() function will fail if: EFAULT The name argument points to an illegal address.
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |Async-Signal-Safe | +-----------------------------+-----------------------------+
uname(1), sysinfo(2), sysconf(3C), attributes(5), standards(5) SunOS 5.11 21 Jul 1999 uname(2)