LXR linux/tools/perf/util/abspath.c

   1#include "cache.h"
   2
   3static const char *get_pwd_cwd(void)
   4{
   5        static char cwd[PATH_MAX + 1];
   6        char *pwd;
   7        struct stat cwd_stat, pwd_stat;
   8        if (getcwd(cwd, PATH_MAX) == NULL)
   9                return NULL;
  10        pwd = getenv("PWD");
  11        if (pwd && strcmp(pwd, cwd)) {
  12                stat(cwd, &cwd_stat);
  13                if (!stat(pwd, &pwd_stat) &&
  14                    pwd_stat.st_dev == cwd_stat.st_dev &&
  15                    pwd_stat.st_ino == cwd_stat.st_ino) {
  16                        strlcpy(cwd, pwd, PATH_MAX);
  17                }
  18        }
  19        return cwd;
  20}
  21
  22const char *make_nonrelative_path(const char *path)
  23{
  24        static char buf[PATH_MAX + 1];
  25
  26        if (is_absolute_path(path)) {
  27                if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
  28                        die("Too long path: %.*s", 60, path);
  29        } else {
  30                const char *cwd = get_pwd_cwd();
  31                if (!cwd)
  32                        die("Cannot determine the current working directory");
  33                if (snprintf(buf, PATH_MAX, "%s/%s", cwd, path) >= PATH_MAX)
  34                        die("Too long path: %.*s", 60, path);
  35        }
  36        return buf;
  37}
  38