* Makefile.in (DLL_OFILES): Add tls_pbuf.o.
* autoload.cc (CreateDesktopW): Replace CreateDesktopA. (CreateWindowStationW): Replace CreateWindowStationA. (GetUserObjectInformationW): Replace GetUserObjectInformationA. * cygheap.h (cwdstuff::get): Assume default buffer size NT_MAX_PATH. * cygtls.cc (_cygtls::remove): Free temporary TLS path buffers. * cygtls.h (TP_NUM_C_BUFS): Define. (TP_NUM_W_BUFS): Define. (class tls_pathbuf): New class to store pointers to thread local temporary path buffers. (_local_storage::pathbufs): New member. * environ.cc (win_env::add_cache): Use temporary TLS path buffer instead of stack based buffer. (posify): Get temporary outenv buffer from calling function. (environ_init): Create temporary TLS path buffer for posify. (build_env): Create Windows environment block as WCHAR buffer. * environ.h (build_env): Change declaration accordingly. * external.cc (sync_winenv): Accommodate build_env change. * fhandler_console.cc (fhandler_console::need_invisible): Use GetUserObjectInformationW and CreateWindowStationW. * fhandler_process.cc (format_process_maps): Use temporary TLS path buffer instead of stack based buffer. * fork.cc (frok::parent): Convert to use CreateProcessW. * path.cc: Throughout use temporary TLS path buffers instead of stack based buffer. Replace checks for CYG_MAX_PATH by checks for NT_MAX_PATH. (getfileattr): New function to replace GetFileAttributesA. (normalize_win32_path): Remove Win32 and NT long path prefixes. (getwd): Assume PATH_MAX + 1 buffer per SUSv3. * path.h (class path_conv): Set path buffer to size NT_MAX_PATH. (iswdrive): Define. * pinfo.cc (commune_process): Use temporary TLS path buffer instead of stack based buffer. * registry.cc (get_registry_hive_path): Ditto. (load_registry_hive): Ditto. * spawn.cc (spawn_guts): Convert to use CreateProcessW and CreateProcessAsUserW. (av::fixup): Open/close file using NtOpenFile/NtClose. * syscalls.cc (mknod_worker): Allow PATH_MAX file name. (mknod32): Ditto. (getusershell): Ditto. * tls_pbuf.cc: New file implementing tls_pathbuf and tmp_pathbuf methods. * tls_pbuf.h: New header for files using tmp_pathbuf. * tlsoffsets.h: Regenerate. * winsup.h (NT_MAX_PATH): Define as 32767 to avoid USHORT overflow.
This commit is contained in:
Corinna Vinschen
@ -13,6 +13,7 @@ details. */
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#include <stddef.h>
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#include <string.h>
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#include <wchar.h>
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#include <wctype.h>
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#include <ctype.h>
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#include <assert.h>
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#include <sys/cygwin.h>
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@ -27,6 +28,7 @@ details. */
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#include "dtable.h"
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#include "cygheap.h"
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#include "cygtls.h"
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#include "tls_pbuf.h"
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#include "registry.h"
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#include "environ.h"
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#include "child_info.h"
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@ -117,7 +119,8 @@ win_env::add_cache (const char *in_posix, const char *in_native)
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}
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else
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{
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char buf[NT_MAX_PATH];
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tmp_pathbuf tp;
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char *buf = tp.c_get ();
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strcpy (buf, name + namelen);
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towin32 (in_posix, buf);
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native = (char *) realloc (native, namelen + 1 + strlen (buf));
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@ -173,7 +176,7 @@ getwinenv (const char *env, const char *in_posix, win_env *temp)
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/* Convert windows path specs to POSIX, if appropriate.
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*/
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static void __stdcall
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posify (char **here, const char *value)
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posify (char **here, const char *value, char *outenv)
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{
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char *src = *here;
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win_env *conv;
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@ -186,7 +189,6 @@ posify (char **here, const char *value)
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/* Turn all the items from c:<foo>;<bar> into their
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mounted equivalents - if there is one. */
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char outenv[1 + len + NT_MAX_PATH];
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memcpy (outenv, src, len);
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char *newvalue = outenv + len;
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if (!conv->toposix (value, newvalue) || _impure_ptr->_errno != EIDRM)
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@ -740,6 +742,7 @@ environ_init (char **envp, int envc)
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bool got_something_from_registry;
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static char NO_COPY cygterm[] = "TERM=cygwin";
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myfault efault;
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tmp_pathbuf tp;
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if (efault.faulted ())
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api_fatal ("internal error reading the windows environment - too many environment variables?");
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@ -804,6 +807,7 @@ environ_init (char **envp, int envc)
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form "=X:=X:\foo\bar; these must be changed into something legal
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(we could just ignore them but maybe an application will
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eventually want to use them). */
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char *tmpbuf = tp.t_get ();
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for (i = 0, w = rawenv; *w != L'\0'; w = wcschr (w, L'\0') + 1, i++)
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{
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sys_wcstombs_alloc (&newp, HEAP_NOTHEAP, w);
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@ -820,7 +824,7 @@ environ_init (char **envp, int envc)
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if (*newp == 'C' && strncmp (newp, "CYGWIN=", sizeof ("CYGWIN=") - 1) == 0)
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parse_options (newp + sizeof ("CYGWIN=") - 1);
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if (*eq && conv_start_chars[(unsigned char)envp[i][0]])
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posify (envp + i, *++eq ? eq : --eq);
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posify (envp + i, *++eq ? eq : --eq, tmpbuf);
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debug_printf ("%p: %s", envp[i], envp[i]);
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}
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@ -957,7 +961,7 @@ spenv::retrieve (bool no_envblock, const char *const env)
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Converts environment variables noted in conv_envvars into win32 form
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prior to placing them in the string. */
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char ** __stdcall
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build_env (const char * const *envp, char *&envblock, int &envc,
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build_env (const char * const *envp, PWCHAR &envblock, int &envc,
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bool no_envblock)
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{
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int len, n;
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@ -1041,8 +1045,8 @@ build_env (const char * const *envp, char *&envblock, int &envc,
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qsort (pass_env, pass_envc, sizeof (char *), env_sort);
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/* Create an environment block suitable for passing to CreateProcess. */
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char *s;
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envblock = (char *) malloc (2 + tl);
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PWCHAR s;
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envblock = (PWCHAR) malloc ((2 + tl) * sizeof (WCHAR));
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int new_tl = 0;
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for (srcp = pass_env, s = envblock; *srcp; srcp++)
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{
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@ -1067,20 +1071,14 @@ build_env (const char * const *envp, char *&envblock, int &envc,
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p = *srcp; /* Don't worry about it */
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len = strlen (p) + 1;
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if (len >= 32 * 1024)
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{
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free (envblock);
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envblock = NULL;
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goto out;
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}
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new_tl += len; /* Keep running total of block length so far */
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/* See if we need to increase the size of the block. */
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if (new_tl > tl)
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{
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tl = new_tl + 100;
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char *new_envblock =
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(char *) realloc (envblock, 2 + tl);
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PWCHAR new_envblock =
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(PWCHAR) realloc (envblock, (2 + tl) * sizeof (WCHAR));
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/* If realloc moves the block, move `s' with it. */
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if (new_envblock != envblock)
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{
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@ -1089,23 +1087,22 @@ build_env (const char * const *envp, char *&envblock, int &envc,
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}
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}
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memcpy (s, p, len);
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int slen = sys_mbstowcs (s, len, p, len);
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/* See if environment variable is "special" in a Windows sense.
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Under NT, the current directories for visited drives are stored
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as =C:=\bar. Cygwin converts the '=' to '!' for hopefully obvious
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reasons. We need to convert it back when building the envblock */
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if (s[0] == '!' && (isdrive (s + 1) || (s[1] == ':' && s[2] == ':'))
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&& s[3] == '=')
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*s = '=';
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s += len;
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if (s[0] == L'!' && (iswdrive (s + 1) || (s[1] == L':' && s[2] == L':'))
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&& s[3] == L'=')
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*s = L'=';
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s += slen + 1;
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}
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*s = '\0'; /* Two null bytes at the end */
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*s = L'\0'; /* Two null bytes at the end */
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assert ((s - envblock) <= tl); /* Detect if we somehow ran over end
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of buffer */
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}
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out:
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debug_printf ("envp %p, envc %d", newenv, envc);
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return newenv;
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}
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