diff options
Diffstat (limited to 'utility.c')
| -rw-r--r-- | utility.c | 15 |
1 files changed, 5 insertions, 10 deletions
@@ -48,6 +48,7 @@ #include <unistd.h> #include <ctype.h> #include <sys/param.h> /* for PATH_MAX */ +#include <sys/utsname.h> /* for uname(2) */ #if defined BB_FEATURE_MOUNT_LOOP #include <fcntl.h> @@ -103,26 +104,20 @@ extern void fatalError(char *s, ...) } #if defined (BB_INIT) || defined (BB_PS) - -#if ! defined BB_FEATURE_USE_PROCFS -#error Sorry, I depend on the /proc filesystem right now. -#endif /* Returns kernel version encoded as major*65536 + minor*256 + patch, * so, for example, to check if the kernel is greater than 2.2.11: * if (get_kernel_revision() <= 2*65536+2*256+11) { <stuff> } */ int get_kernel_revision() { - FILE *file; + struct utsname name; int major = 0, minor = 0, patch = 0; - file = fopen("/proc/sys/kernel/osrelease", "r"); - if (file == NULL) { - /* bummer, /proc must not be mounted... */ + if (uname(&name) == -1) { + perror("cannot get system information"); return (0); } - fscanf(file, "%d.%d.%d", &major, &minor, &patch); - fclose(file); + sscanf(name.version, "%d.%d.%d", &major, &minor, &patch); return major * 65536 + minor * 256 + patch; } #endif /* BB_INIT || BB_PS */ |