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author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-06-10 05:30:17 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-06-10 05:30:17 -0300 |
commit | d635711daa98be86d4c7fd01499c34f566b54ccb (patch) | |
tree | aa5cc3760a27c3d57146498cb82fa549547de06c /samples/bpf/spintest_user.c | |
parent | c91265cd0efb83778f015b4d4b1129bd2cfd075e (diff) |
Linux-libre 4.6.2-gnu
Diffstat (limited to 'samples/bpf/spintest_user.c')
-rw-r--r-- | samples/bpf/spintest_user.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/samples/bpf/spintest_user.c b/samples/bpf/spintest_user.c new file mode 100644 index 000000000..311ede532 --- /dev/null +++ b/samples/bpf/spintest_user.c @@ -0,0 +1,50 @@ +#include <stdio.h> +#include <unistd.h> +#include <linux/bpf.h> +#include <string.h> +#include <assert.h> +#include <sys/resource.h> +#include "libbpf.h" +#include "bpf_load.h" + +int main(int ac, char **argv) +{ + struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY}; + long key, next_key, value; + char filename[256]; + struct ksym *sym; + int i; + + snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); + setrlimit(RLIMIT_MEMLOCK, &r); + + if (load_kallsyms()) { + printf("failed to process /proc/kallsyms\n"); + return 2; + } + + if (load_bpf_file(filename)) { + printf("%s", bpf_log_buf); + return 1; + } + + for (i = 0; i < 5; i++) { + key = 0; + printf("kprobing funcs:"); + while (bpf_get_next_key(map_fd[0], &key, &next_key) == 0) { + bpf_lookup_elem(map_fd[0], &next_key, &value); + assert(next_key == value); + sym = ksym_search(value); + printf(" %s", sym->name); + key = next_key; + } + if (key) + printf("\n"); + key = 0; + while (bpf_get_next_key(map_fd[0], &key, &next_key) == 0) + bpf_delete_elem(map_fd[0], &next_key); + sleep(1); + } + + return 0; +} |