diff options
Diffstat (limited to 'tests/cris/check_glibc_kernelversion.c')
| -rw-r--r-- | tests/cris/check_glibc_kernelversion.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/tests/cris/check_glibc_kernelversion.c b/tests/cris/check_glibc_kernelversion.c new file mode 100644 index 000000000..fcbc7b07f --- /dev/null +++ b/tests/cris/check_glibc_kernelversion.c @@ -0,0 +1,116 @@ +/* + * Check the lz insn. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <stdint.h> +#include "sys.h" + +#define __LINUX_KERNEL_VERSION 131584 + +#define DL_SYSDEP_OSCHECK(FATAL) \ + do { \ + /* Test whether the kernel is new enough. This test is only \ + performed if the library is not compiled to run on all \ + kernels. */ \ + if (__LINUX_KERNEL_VERSION > 0) \ + { \ + char bufmem[64]; \ + char *buf = bufmem; \ + unsigned int version; \ + int parts; \ + char *cp; \ + struct utsname uts; \ + \ + /* Try the uname syscall */ \ + if (__uname (&uts)) \ + { \ + /* This was not successful. Now try reading the /proc \ + filesystem. */ \ + ssize_t reslen; \ + int fd = __open ("/proc/sys/kernel/osrelease", O_RDONLY); \ + if (fd == -1 \ + || (reslen = __read (fd, bufmem, sizeof (bufmem))) <= 0) \ + /* This also didn't work. We give up since we cannot \ + make sure the library can actually work. */ \ + FATAL ("FATAL: cannot determine library version\n"); \ + __close (fd); \ + buf[MIN (reslen, (ssize_t) sizeof (bufmem) - 1)] = '\0'; \ + } \ + else \ + buf = uts.release; \ + \ + /* Now convert it into a number. The string consists of at most \ + three parts. */ \ + version = 0; \ + parts = 0; \ + cp = buf; \ + while ((*cp >= '0') && (*cp <= '9')) \ + { \ + unsigned int here = *cp++ - '0'; \ + \ + while ((*cp >= '0') && (*cp <= '9')) \ + { \ + here *= 10; \ + here += *cp++ - '0'; \ + } \ + \ + ++parts; \ + version <<= 8; \ + version |= here; \ + \ + if (*cp++ != '.') \ + /* Another part following? */ \ + break; \ + } \ + \ + if (parts < 3) \ + version <<= 8 * (3 - parts); \ + \ + /* Now we can test with the required version. */ \ + if (version < __LINUX_KERNEL_VERSION) \ + /* Not sufficent. */ \ + FATAL ("FATAL: kernel too old\n"); \ + \ + _dl_osversion = version; \ + } \ + } while (0) + +int main(void) +{ + char bufmem[64] = "2.6.22"; + char *buf = bufmem; + unsigned int version; + int parts; + char *cp; + + version = 0; + parts = 0; + cp = buf; + while ((*cp >= '0') && (*cp <= '9')) + { + unsigned int here = *cp++ - '0'; + + while ((*cp >= '0') && (*cp <= '9')) + { + here *= 10; + here += *cp++ - '0'; + } + + ++parts; + version <<= 8; + version |= here; + + if (*cp++ != '.') + /* Another part following? */ + break; + } + + if (parts < 3) + version <<= 8 * (3 - parts); + if (version < __LINUX_KERNEL_VERSION) + err(); + pass(); + exit(0); +} |