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| author | Ulrich Drepper <drepper@redhat.com> | 2002-06-25 19:33:56 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2002-06-25 19:33:56 +0000 |
| commit | c42924899320727fd22d17c944a473bab0f55bb7 (patch) | |
| tree | 4a54ddb8cac453ea5a36e4446559730325edf1ce /libio/fileops.c | |
| parent | 51909ff7bf4563b53e6ffaf07a8e8e0af79d322f (diff) | |
| download | glibc-c42924899320727fd22d17c944a473bab0f55bb7.tar.gz glibc-c42924899320727fd22d17c944a473bab0f55bb7.tar.xz glibc-c42924899320727fd22d17c944a473bab0f55bb7.zip | |
Update.
* libio/fileops.c (_IO_file_xsgetn_mmap): Always set EOF flag is not enough content is available. * libio/tst-eof.c: New file. * libio/Makefile (tests): Add tst-eof. * libio/fileops.c (_IO_file_underflow_mmap): Read a single byte to update atime. * libio/tst-atime.c: New file. * libio/Makefile (tests): Add tst-atime.
Diffstat (limited to 'libio/fileops.c')
| -rw-r--r-- | libio/fileops.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/libio/fileops.c b/libio/fileops.c index 42bba7aa21..20794955a8 100644 --- a/libio/fileops.c +++ b/libio/fileops.c @@ -608,6 +608,13 @@ _IO_file_underflow_mmap (_IO_FILE *fp) { if (fp->_IO_read_end < fp->_IO_buf_end) { + /* A stupid requirement in POSIX says that the first read on a + stream must update the atime. Just read a single byte. We + don't have to worry about repositioning the file descriptor + since the following seek defines its position anyway. */ + char ignore[1]; + read (fp->_fileno, ignore, 1); + if ( # ifdef _G_LSEEK64 _G_LSEEK64 (fp->_fileno, fp->_IO_buf_end - fp->_IO_buf_base, @@ -1262,12 +1269,10 @@ _IO_file_xsgetn_mmap (fp, data, n) } } - if (have == 0) - { - if (s == (char *) data) - fp->_flags |= _IO_EOF_SEEN; - } - else + if (have < n) + fp->_flags |= _IO_EOF_SEEN; + + if (have != 0) { have = MIN (have, n); #ifdef _LIBC |