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glibc  2.9
Defines | Functions
fxstat.c File Reference
#include <errno.h>
#include <stddef.h>
#include <sys/stat.h>
#include <kernel_stat.h>
#include <sysdep.h>
#include <sys/syscall.h>
#include <bp-checks.h>
#include <kernel-features.h>
#include <xstatconv.h>
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Defines

#define __fxstat64   __fxstat64_disable

Functions

int __fxstat (int vers, int fd, struct stat *buf)

Define Documentation

#define __fxstat64   __fxstat64_disable

Definition at line 23 of file fxstat.c.


Function Documentation

int __fxstat ( int  vers,
int  fd,
struct stat buf 
)

Definition at line 47 of file fxstat.c.

{
#if __ASSUME_STAT64_SYSCALL == 0
  struct kernel_stat kbuf;
#endif
  int result;

  if (vers == _STAT_VER_KERNEL)
    return INLINE_SYSCALL (fstat, 2, fd, CHECK_1 ((struct kernel_stat *) buf));

#if __ASSUME_STAT64_SYSCALL > 0
  {
    struct stat64 buf64;

    result = INLINE_SYSCALL (fstat64, 2, fd, __ptrvalue (&buf64));
    if (result == 0)
      result = __xstat32_conv (vers, &buf64, buf);
    return result;
  }
#else

# if defined __NR_stat64
  /* To support 32 bit UIDs, we have to use stat64.  The normal stat call only returns
     16 bit UIDs.  */
  if (! __have_no_stat64)
    {
      struct stat64 buf64;

      result = INLINE_SYSCALL (fstat64, 2, fd, __ptrvalue (&buf64));

      if (result == 0)
       result = __xstat32_conv (vers, &buf64, buf);

      if (result != -1 || errno != ENOSYS)
       return result;

      __have_no_stat64 = 1;
    }
# endif

  result = INLINE_SYSCALL (fstat, 2, fd, __ptrvalue (&kbuf));
  if (result == 0)
    result = __xstat_conv (vers, &kbuf, buf);

  return result;
#endif  /* __ASSUME_STAT64_SYSCALL  */
}

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