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* cygwin.din: Export _getmode and getmode to allow querying of binary state of

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an fd.
* external.cc (cygwin_internal): Add handling of perfile_table setting.
* fhandler.cc (perfile_table): New global.
(fhandler_base::get_default_fmode): New method to return a file's default mode
based on its name.
(fhandler_base::open): Use get_default_mode method to determine a file's mode.
Record file mode in file flags.
* fhandler.h (fhandler_base): Declare get_default_fmode
* syscalls.cc (getmode): New function.
* sys/cygwin.h (__cygwin_perfile): New structure.
(cygwin_getinfo_types): Move outside of WINVER conditional.
(per_process): Move inside of WINVER conditional.
This commit is contained in:
Christopher Faylor
2000-07-09 05:29:51 +00:00
parent 85219b356e
commit bd4ec49671
8 changed files with 125 additions and 54 deletions
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39
winsup/cygwin/fhandler.cc
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@@ -18,6 +18,8 @@ static NO_COPY const int CHUNK_SIZE = 1024; /* Used for crlf conversions */
static char fhandler_disk_dummy_name[] = "some disk file";
struct __cygwin_perfile *perfile_table = NULL;
DWORD binmode;
int
@@ -249,6 +251,27 @@ fhandler_base::raw_write (const void *ptr, size_t len)
return bytes_written;
}
#define ACCFLAGS(x) (x & (O_RDONLY | O_WRONLY | O_RDWR))
int
fhandler_base::get_default_fmode (int flags)
{
if (perfile_table)
{
size_t nlen = strlen (get_name ());
unsigned accflags = ACCFLAGS (flags);
for (__cygwin_perfile *pf = perfile_table; pf->name; pf++)
{
size_t pflen = strlen (pf->name);
const char *stem = get_name () + nlen - pflen;
if (pflen > nlen || (stem != get_name () && !isdirsep (stem[-1])))
continue;
else if (strcasematch (stem, pf->name) && ACCFLAGS (pf->flags) == accflags)
return pf->flags & ~(O_RDONLY | O_WRONLY | O_RDWR);
}
}
return __fmode;
}
/* Open system call handler function.
Path is now already checked for symlinks */
int
@@ -262,8 +285,6 @@ fhandler_base::open (int flags, mode_t mode)
syscall_printf ("(%s, %p)", get_win32_name (), flags);
set_flags (flags);
if (get_win32_name () == NULL)
{
set_errno (ENOENT);
@@ -352,17 +373,23 @@ fhandler_base::open (int flags, mode_t mode)
rpos_ = 0;
rsize_ = -1;
int bin;
if (flags & (O_BINARY | O_TEXT))
bin = flags & O_TEXT ? 0 : O_BINARY;
else if (__fmode & O_BINARY)
int fmode;
if ((bin = flags & (O_BINARY | O_TEXT)))
/* nothing to do */;
else if ((fmode = get_default_fmode (flags)) & O_BINARY)
bin = O_BINARY;
else if (__fmode & O_TEXT)
else if (fmode & O_TEXT)
bin = O_TEXT;
else if (get_device () == FH_DISK)
bin = get_w_binary () || get_r_binary ();
else
bin = binmode || get_w_binary () || get_r_binary ();
if (bin & O_TEXT)
bin = 0;
set_flags (flags | (bin ? O_BINARY : O_TEXT));
set_r_binary (bin);
set_w_binary (bin);
syscall_printf ("filemode set to %s", bin ? "binary" : "text");