From 378c18e5f024ac5a8aef4cb40d7c9aa9633d144c Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 16:30:35 +0200 Subject: Adding upstream version 2.38.1. Signed-off-by: Daniel Baumann --- lib/linux_version.c | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 lib/linux_version.c (limited to 'lib/linux_version.c') diff --git a/lib/linux_version.c b/lib/linux_version.c new file mode 100644 index 0000000..119869e --- /dev/null +++ b/lib/linux_version.c @@ -0,0 +1,75 @@ +/* + * No copyright is claimed. This code is in the public domain; do with + * it what you wish. + */ +#include +#include + +#include "c.h" +#include "linux_version.h" + +int get_linux_version (void) +{ + static int kver = -1; + struct utsname uts; + int x = 0, y = 0, z = 0; + int n; + + if (kver != -1) + return kver; + if (uname(&uts)) + return kver = 0; + + n = sscanf(uts.release, "%d.%d.%d", &x, &y, &z); + if (n < 1 || n > 3) + return kver = 0; + + return kver = KERNEL_VERSION(x, y, z); +} + +#ifdef TEST_PROGRAM_LINUXVERSION +# include +int main(int argc, char *argv[]) +{ + int rc = EXIT_FAILURE; + + if (argc == 1) { + printf("Linux version: %d\n", get_linux_version()); + rc = EXIT_SUCCESS; + + } else if (argc == 5) { + const char *oper = argv[1]; + + int x = atoi(argv[2]), + y = atoi(argv[3]), + z = atoi(argv[4]); + int kver = get_linux_version(); + int uver = KERNEL_VERSION(x, y, z); + + if (strcmp(oper, "==") == 0) + rc = kver == uver; + else if (strcmp(oper, "<=") == 0) + rc = kver <= uver; + else if (strcmp(oper, ">=") == 0) + rc = kver >= uver; + else + errx(EXIT_FAILURE, "unsupported operator"); + + if (rc) + printf("match\n"); + else + printf("not-match [%d %s %d, x.y.z: %d.%d.%d]\n", + kver, oper, uver, x, y, z); + + rc = rc ? EXIT_SUCCESS : EXIT_FAILURE; + + } else + fprintf(stderr, "Usage:\n" + " %s [ ]\n" + "supported operators:\n" + " ==, <=, >=\n", + program_invocation_short_name); + + return rc; +} +#endif -- cgit v1.2.3