include/fileutils.h

   1 #ifndef UTIL_LINUX_FILEUTILS
   2 #define UTIL_LINUX_FILEUTILS
   3
   4 #include <stdio.h>
   5 #include <fcntl.h>
   6 #include <unistd.h>
   7 #include <sys/stat.h>
   8
   9 #include "c.h"
  10
  11 extern int mkstemp_cloexec(char *template);
  12
  13 extern int xmkstemp(char **tmpname, const char *dir, const char *prefix);
  14
  15 static inline FILE *xfmkstemp(char **tmpname, const char *dir, const char *prefix)
  16 {
  17         int fd;
  18         FILE *ret;
  19
  20         fd = xmkstemp(tmpname, dir, prefix);
  21         if (fd == -1)
  22                 return NULL;
  23
  24         if (!(ret = fdopen(fd, "w+" UL_CLOEXECSTR))) {
  25                 close(fd);
  26                 return NULL;
  27         }
  28         return ret;
  29 }
  30
  31 #ifdef HAVE_OPENAT
  32 static inline FILE *fopen_at(int dir, const char *filename,
  33                              int flags, const char *mode)
  34 {
  35         int fd = openat(dir, filename, flags);
  36         if (fd < 0)
  37                 return NULL;
  38
  39         return fdopen(fd, mode);
  40 }
  41 #endif
  42
  43 static inline int is_same_inode(const int fd, const struct stat *st)
  44 {
  45         struct stat f;
  46
  47         if (fstat(fd, &f) < 0)
  48                 return 0;
  49         else if (f.st_dev != st->st_dev || f.st_ino != st->st_ino)
  50                 return 0;
  51         return 1;
  52 }
  53
  54 extern int dup_fd_cloexec(int oldfd, int lowfd);
  55 extern int get_fd_tabsize(void);
  56
  57 extern int mkdir_p(const char *path, mode_t mode);
  58 extern char *stripoff_last_component(char *path);
  59
  60 #endif /* UTIL_LINUX_FILEUTILS */