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Improve quality of uname/gethostname/getdomainname

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This commit is contained in:
Justine Tunney 2022-09-03 19:07:19 -07:00
parent c5c4dfcd21
commit b66bd064d8
13 changed files with 334 additions and 151 deletions
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18
libc/calls/gethostname-linux.c
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@ -16,15 +16,19 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/calls/struct/utsname.h"
#include "libc/calls/struct/utsname-linux.internal.h"
#include "libc/calls/syscall_support-sysv.internal.h"
#include "libc/str/str.h"
#include "libc/sysv/errfuns.h"
int gethostname_linux(char *name, size_t len) {
struct utsname u;
if (uname(&u) == -1) return -1;
memccpy(name, u.nodename, '\0', len);
name[len - 1] = '\0';
return 0;
struct utsname_linux uts;
if (!sys_uname_linux(&uts)) {
if (memccpy(name, uts.nodename, '\0', len)) {
return 0;
} else {
return enametoolong();
}
}
return -1;
}