diff options
Diffstat (limited to 'executor/executor_linux.h')
| -rw-r--r-- | executor/executor_linux.h | 41 |
1 files changed, 1 insertions, 40 deletions
diff --git a/executor/executor_linux.h b/executor/executor_linux.h index f8aed1791..e4e3ab56b 100644 --- a/executor/executor_linux.h +++ b/executor/executor_linux.h @@ -93,50 +93,11 @@ static intptr_t execute_syscall(const call_t* c, intptr_t a[kMaxArgs]) return res; } -static void dump_dir(const char* path) -{ - DIR* dir = opendir(path); - struct dirent* d = NULL; - if (!dir) - return; - fprintf(stderr, "Index of %s\n", path); - while ((d = readdir(dir)) != NULL) - fprintf(stderr, " %s\n", d->d_name); - closedir(dir); -} - static void cover_open(cover_t* cov, bool extra) { int fd = open("/sys/kernel/debug/kcov", O_RDWR); - if (fd == -1) { - const int err = errno; - dump_dir("/"); - dump_dir("/proc/"); - dump_dir("/sys/"); - if (mount("/proc/", "/proc/", "proc", 0, NULL)) - fprintf(stderr, "Can't mount proc on /proc/\n"); - if (chdir("/sys/")) - fprintf(stderr, "/sys/ does not exist.\n"); - else if (chdir("/sys/kernel/")) - fprintf(stderr, "/sys/kernel/ does not exist.\n"); - else if (chdir("/sys/kernel/debug/")) - fprintf(stderr, "/sys/kernel/debug/ does not exist.\n"); - fd = open("/proc/mounts", O_RDONLY); - if (fd == -1) { - fprintf(stderr, "open of /proc/mounts failed.\n"); - if (chdir("/proc/")) - fprintf(stderr, "/proc/ does not exist.\n"); - } else { - static char buffer[4096]; - int len; - fprintf(stderr, "Content of /proc/mounts\n"); - while ((len = read(fd, buffer, sizeof(buffer))) > 0) - fwrite(buffer, 1, len, stderr); - close(fd); - } - errno = err; + if (fd == -1) fail("open of /sys/kernel/debug/kcov failed"); - } if (dup2(fd, cov->fd) < 0) fail("filed to dup2(%d, %d) cover fd", fd, cov->fd); close(fd); |