http://netvouz.com/MondoTofu/tag/programing?feed=rss MondoTofu's bookmarks tagged "programing" on Netvouz http://uw714doc.sco.com/en/SDK_sysprog/SCL_SysCallErrHdl.html System call error handling System calls that fail to complete successfully almost always return a value of -1 to your program. (If you look through the system calls in Section 2, you will see that there are a few calls for which no return value is defined, but they are the exceptions.) In addition to the -1 returned to the program, the unsuccessful system call places an integer in an externally declared variable, errno. In a C program, you can determine the value in errno if your program contains the following statement: #include <errno.h> Unix Tips MondoTofu Thu, 19 Jan 2012 22:19:47 GMT