7ae3e6b3d4
path_conv <-> normalize_posix_path, plus a bit of buffer. (TP_NUM_W_BUFS): Ditto. (class san): Change type of _c_cnt and _w_cnt to unsigned. * path.cc (normalize_posix_path): Guard recursion into path_conv against tmp_pathbuf overflow. Generate normalized path in call to path_conv. If the path is valid, replace dst with the normalized_path from path_conv call. Add comment to explain why we're doing this. * tls_pbuf.cc (tls_pathbuf::destroy): Only free buffers until the first buffer pointer is NULL. (tmp_pathbuf::c_get): Simplify error message. (tmp_pathbuf::w_get): Ditto. * tls_pbuf.h (class tmp_pathbuf): Change type of c_buf_old and w_buf_old to unsigned. (tmp_pathbuf::check_usage): New inline method to check if we have enough tmp_pathbuf buffers left to call a function using tmp_pathbuf buffers. * tlsoffsets.h: Regenerate. * tlsoffsets64.h: Regenerate.
58 lines
1.4 KiB
C++
58 lines
1.4 KiB
C++
/* tls_pbuf.cc
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Copyright 2008, 2010, 2014 Red Hat, Inc.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include <winsup.h>
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#include <malloc.h>
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#include "cygtls.h"
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#include "tls_pbuf.h"
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#define tls_pbuf _my_tls.locals.pathbufs
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void
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tls_pathbuf::destroy ()
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{
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for (unsigned i = 0; i < TP_NUM_C_BUFS && c_buf[i]; ++i)
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free (c_buf[i]);
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for (unsigned i = 0; i < TP_NUM_W_BUFS && w_buf[i]; ++i)
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free (w_buf[i]);
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}
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tmp_pathbuf::tmp_pathbuf ()
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: c_buf_old (tls_pbuf.c_cnt),
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w_buf_old (tls_pbuf.w_cnt)
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{}
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tmp_pathbuf::~tmp_pathbuf ()
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{
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tls_pbuf.c_cnt = c_buf_old;
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tls_pbuf.w_cnt = w_buf_old;
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}
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char *
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tmp_pathbuf::c_get ()
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{
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if (tls_pbuf.c_cnt >= TP_NUM_C_BUFS)
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api_fatal ("Internal error: TP_NUM_C_BUFS too small: %u", TP_NUM_C_BUFS);
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if (!tls_pbuf.c_buf[tls_pbuf.c_cnt]
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&& !(tls_pbuf.c_buf[tls_pbuf.c_cnt] = (char *) malloc (NT_MAX_PATH)))
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api_fatal ("Internal error: Out of memory for new path buf.");
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return tls_pbuf.c_buf[tls_pbuf.c_cnt++];
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}
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PWCHAR
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tmp_pathbuf::w_get ()
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{
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if (tls_pbuf.w_cnt >= TP_NUM_W_BUFS)
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api_fatal ("Internal error: TP_NUM_W_BUFS too small: %u.", TP_NUM_W_BUFS);
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if (!tls_pbuf.w_buf[tls_pbuf.w_cnt]
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&& !(tls_pbuf.w_buf[tls_pbuf.w_cnt]
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= (PWCHAR) malloc (NT_MAX_PATH * sizeof (WCHAR))))
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api_fatal ("Internal error: Out of memory for new wide path buf.");
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return tls_pbuf.w_buf[tls_pbuf.w_cnt++];
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}
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