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-rw-r--r--generic/uname.c99
1 files changed, 99 insertions, 0 deletions
diff --git a/generic/uname.c b/generic/uname.c
new file mode 100644
index 0000000..b5bb583
--- /dev/null
+++ b/generic/uname.c
@@ -0,0 +1,99 @@
+/*
+htop - generic/uname.c
+(C) 2021 htop dev team
+Released under the GNU GPLv2+, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "config.h" // IWYU pragma: keep
+
+#include "generic/uname.h"
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "Macros.h"
+#include "XUtils.h"
+
+#ifdef HAVE_SYS_UTSNAME_H
+#include <sys/utsname.h>
+#endif
+
+
+#ifndef OSRELEASEFILE
+#define OSRELEASEFILE "/etc/os-release"
+#endif
+
+static void parseOSRelease(char* buffer, size_t bufferLen) {
+ FILE* stream = fopen(OSRELEASEFILE, "r");
+ if (!stream) {
+ xSnprintf(buffer, bufferLen, "No OS Release");
+ return;
+ }
+
+ char name[64] = {'\0'};
+ char version[64] = {'\0'};
+ char lineBuffer[256];
+ while (fgets(lineBuffer, sizeof(lineBuffer), stream)) {
+ if (String_startsWith(lineBuffer, "PRETTY_NAME=\"")) {
+ const char* start = lineBuffer + strlen("PRETTY_NAME=\"");
+ const char* stop = strrchr(lineBuffer, '"');
+ if (!stop || stop <= start)
+ continue;
+ String_safeStrncpy(buffer, start, MINIMUM(bufferLen, (size_t)(stop - start + 1)));
+ fclose(stream);
+ return;
+ }
+ if (String_startsWith(lineBuffer, "NAME=\"")) {
+ const char* start = lineBuffer + strlen("NAME=\"");
+ const char* stop = strrchr(lineBuffer, '"');
+ if (!stop || stop <= start)
+ continue;
+ String_safeStrncpy(name, start, MINIMUM(sizeof(name), (size_t)(stop - start + 1)));
+ continue;
+ }
+ if (String_startsWith(lineBuffer, "VERSION=\"")) {
+ const char* start = lineBuffer + strlen("VERSION=\"");
+ const char* stop = strrchr(lineBuffer, '"');
+ if (!stop || stop <= start)
+ continue;
+ String_safeStrncpy(version, start, MINIMUM(sizeof(version), (size_t)(stop - start + 1)));
+ continue;
+ }
+ }
+ fclose(stream);
+
+ snprintf(buffer, bufferLen, "%s%s%s", name[0] ? name : "", name[0] && version[0] ? " " : "", version);
+}
+
+char* Generic_uname(void) {
+ static char savedString[
+ /* uname structure fields - manpages recommend sizeof */
+ sizeof(((struct utsname*)0)->sysname) +
+ sizeof(((struct utsname*)0)->release) +
+ sizeof(((struct utsname*)0)->machine) +
+ 16/*markup*/ +
+ 128/*distro*/] = {'\0'};
+ static bool loaded_data = false;
+
+ if (!loaded_data) {
+ struct utsname uname_info;
+ int uname_result = uname(&uname_info);
+
+ char distro[128];
+ parseOSRelease(distro, sizeof(distro));
+
+ if (uname_result == 0) {
+ size_t written = xSnprintf(savedString, sizeof(savedString), "%s %s [%s]", uname_info.sysname, uname_info.release, uname_info.machine);
+ if (!String_contains_i(savedString, distro, false) && sizeof(savedString) > written)
+ snprintf(savedString + written, sizeof(savedString) - written, " @ %s", distro);
+ } else {
+ snprintf(savedString, sizeof(savedString), "%s", distro);
+ }
+
+ loaded_data = true;
+ }
+
+ return savedString;
+}