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1 #include <u.h>2 #include <libc.h>4 char*5 sysname(void)6 {7 char buf[300], *p, *q;9 if((q = getenv("sysname")) == nil){10 if(gethostname(buf, sizeof buf) < 0)11 goto err;12 buf[sizeof buf-1] = 0;13 q = strdup(buf);14 if(q == nil)15 goto err;16 }17 if((p = strchr(q, '.')) != nil)18 *p = 0;19 return q;21 err:22 return "gnot";23 }