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* syscalls.cc (_cygwin_istext_for_stdio): New, for newlib

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* include/cygwin/version.h: Bump API number for detect old
programs using old getc/putc macros
This commit is contained in:
DJ Delorie 2000-05-23 23:52:50 +00:00
parent c4e1aa0115
commit 56cd25ee02
3 changed files with 62 additions and 2 deletions
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6
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,9 @@
2000-05-23 DJ Delorie <dj@cygnus.com>
* syscalls.cc (_cygwin_istext_for_stdio): New, for newlib
* include/cygwin/version.h: Bump API number for detect old
programs using old getc/putc macros
2000-05-23 DJ Delorie <dj@cygnus.com>
* dir.cc (writable_directory): handle root directories

10
winsup/cygwin/include/cygwin/version.h
View File

@ -70,6 +70,13 @@ details. */
(CYGWIN_VERSION_DLL_MAKE_COMBINED (user_data->api_major, user_data->api_minor) <= \
CYGWIN_VERSION_DLL_OLD_TERMIOS)
/* Old APIs had getc/putc macros that conflict with new CR/LF
handling in the stdio buffers */
#define CYGWIN_VERSION_OLD_STDIO_CRLF_HANDLING \
(CYGWIN_VERSION_DLL_MAKE_COMBINED (user_data->api_major, user_data->api_minor) <= \
00020)
/* We used to use the DLL major/minor to track
non-backward-compatible interface changes to the API. Now we
use an API major/minor number for this purpose. */
@ -96,10 +103,11 @@ details. */
18: Stop exporting _strace_wm
19: Export fchown, lchown, lacl
20: regsub, inet_network
21: incompatible change to stdio cr/lf and buffering
*/
#define CYGWIN_VERSION_API_MAJOR 0
#define CYGWIN_VERSION_API_MINOR 20
#define CYGWIN_VERSION_API_MINOR 21
/* There is also a compatibity version number associated with the
shared memory regions. It is incremented when incompatible

48
winsup/cygwin/syscalls.cc
View File

@ -1431,6 +1431,42 @@ ttyname (int fd)
return (char *)(dtable[fd]->ttyname ());
}
/* Tells stdio if it should do the cr/lf conversion for this file */
extern "C" int _cygwin_istext_for_stdio (int fd);
int
_cygwin_istext_for_stdio (int fd)
{
syscall_printf("_cygwin_istext_for_stdio (%d)\n", fd);
if (CYGWIN_VERSION_OLD_STDIO_CRLF_HANDLING)
{
syscall_printf(" _cifs: old API\n");
return 0; /* we do it for old apps, due to getc/putc macros */
}
if (dtable.not_open (fd))
{
syscall_printf(" _cifs: fd not open\n");
return 0;
}
fhandler_base *p = dtable[fd];
if (p->get_device() != FH_DISK)
{
syscall_printf(" _cifs: fd not disk file\n");
return 0;
}
if (p->get_w_binary () || p->get_r_binary ())
{
syscall_printf(" _cifs: get_*_binary\n");
return 0;
}
syscall_printf("_cygwin_istext_for_stdio says yes\n");
return 1;
}
/* internal newlib function */
extern "C" int _fwalk (struct _reent *ptr, int (*function)(FILE *));
@ -1442,6 +1478,9 @@ setmode_helper (FILE *f)
{
if (fileno(f) != setmode_file)
return 0;
syscall_printf("setmode: file was %s now %s\n",
f->_flags & __SCLE ? "cle" : "raw",
setmode_mode & O_TEXT ? "cle" : "raw");
if (setmode_mode & O_TEXT)
f->_flags |= __SCLE;
else
@ -1491,10 +1530,17 @@ setmode (int fd, int mode)
p->set_r_binary (0);
}
setmode_mode = mode;
if (_cygwin_istext_for_stdio (fd))
setmode_mode = O_TEXT;
else
setmode_mode = O_BINARY;
setmode_file = fd;
_fwalk(_REENT, setmode_helper);
syscall_printf ("setmode (%d, %s) returns %s\n", fd,
mode&O_TEXT ? "text" : "binary",
res&O_TEXT ? "text" : "binary");
return res;
}