author | Danek Duvall <danek.duvall@oracle.com> |
Thu, 07 Apr 2011 16:25:07 -0700 | |
changeset 198 | 172fc01ce997 |
permissions | -rw-r--r-- |
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To: [email protected] |
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Subject: Patch 7.2.300 |
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Fcc: outbox |
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From: Bram Moolenaar <[email protected]> |
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Mime-Version: 1.0 |
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Content-Type: text/plain; charset=UTF-8 |
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Content-Transfer-Encoding: 8bit |
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------------ |
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|
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Patch 7.2.300 |
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Problem: Vim doesn't close file descriptors when forking and executing |
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another command, e.g., ":shell". |
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Solution: Use FD_CLOEXEC when available. (James Vega) |
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Files: src/auto/configure, src/config.h.in, src/configure.in, |
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src/ex_cmdds2.c, src/fileio.c, src/memfile.c, src/memline.c |
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*** ../vim-7.2.299/src/auto/configure 2009-11-17 12:08:48.000000000 +0100 |
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--- src/auto/configure 2009-11-17 13:09:03.000000000 +0100 |
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*************** |
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*** 15174,15179 **** |
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--- 15174,15231 ---- |
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$as_echo "yes" >&6; } |
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fi |
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|
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+ { $as_echo "$as_me:$LINENO: checking for FD_CLOEXEC" >&5 |
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+ $as_echo_n "checking for FD_CLOEXEC... " >&6; } |
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+ cat >conftest.$ac_ext <<_ACEOF |
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+ /* confdefs.h. */ |
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+ _ACEOF |
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+ cat confdefs.h >>conftest.$ac_ext |
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+ cat >>conftest.$ac_ext <<_ACEOF |
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+ /* end confdefs.h. */ |
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+ #if HAVE_FCNTL_H |
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+ # include <fcntl.h> |
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+ #endif |
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+ int |
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+ main () |
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+ { |
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+ int flag = FD_CLOEXEC; |
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+ ; |
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+ return 0; |
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+ } |
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+ _ACEOF |
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+ rm -f conftest.$ac_objext |
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+ if { (ac_try="$ac_compile" |
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+ case "(($ac_try" in |
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+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;; |
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+ *) ac_try_echo=$ac_try;; |
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+ esac |
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+ eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\"" |
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+ $as_echo "$ac_try_echo") >&5 |
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+ (eval "$ac_compile") 2>conftest.er1 |
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+ ac_status=$? |
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+ grep -v '^ *+' conftest.er1 >conftest.err |
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+ rm -f conftest.er1 |
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+ cat conftest.err >&5 |
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+ $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5 |
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+ (exit $ac_status); } && { |
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+ test -z "$ac_c_werror_flag" || |
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+ test ! -s conftest.err |
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+ } && test -s conftest.$ac_objext; then |
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+ { $as_echo "$as_me:$LINENO: result: yes" >&5 |
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+ $as_echo "yes" >&6; }; cat >>confdefs.h <<\_ACEOF |
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+ #define HAVE_FD_CLOEXEC 1 |
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+ _ACEOF |
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+ |
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+ else |
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+ $as_echo "$as_me: failed program was:" >&5 |
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+ sed 's/^/| /' conftest.$ac_ext >&5 |
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+ |
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+ { $as_echo "$as_me:$LINENO: result: not usable" >&5 |
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+ $as_echo "not usable" >&6; } |
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+ fi |
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+ |
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+ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext |
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+ |
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{ $as_echo "$as_me:$LINENO: checking for rename" >&5 |
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$as_echo_n "checking for rename... " >&6; } |
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cat >conftest.$ac_ext <<_ACEOF |
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*** ../vim-7.2.299/src/config.h.in 2009-11-17 12:08:48.000000000 +0100 |
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--- src/config.h.in 2009-11-17 13:01:36.000000000 +0100 |
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*************** |
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*** 388,390 **** |
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--- 388,393 ---- |
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|
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/* Define if you want XSMP interaction as well as vanilla swapfile safety */ |
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#undef USE_XSMP_INTERACT |
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+ |
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+ /* Define if fcntl()'s F_SETFD command knows about FD_CLOEXEC */ |
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+ #undef HAVE_FD_CLOEXEC |
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*** ../vim-7.2.299/src/configure.in 2009-11-17 12:08:48.000000000 +0100 |
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--- src/configure.in 2009-11-17 13:01:36.000000000 +0100 |
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*************** |
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*** 2855,2860 **** |
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--- 2855,2870 ---- |
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AC_MSG_RESULT(yes) |
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fi |
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|
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+ dnl make sure the FD_CLOEXEC flag for fcntl()'s F_SETFD command is known |
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+ AC_MSG_CHECKING(for FD_CLOEXEC) |
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+ AC_TRY_COMPILE( |
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+ [#if HAVE_FCNTL_H |
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+ # include <fcntl.h> |
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+ #endif], |
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+ [ int flag = FD_CLOEXEC;], |
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+ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_FD_CLOEXEC), |
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+ AC_MSG_RESULT(not usable)) |
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+ |
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dnl rename needs to be checked separately to work on Nextstep with cc |
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AC_MSG_CHECKING(for rename) |
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112 |
AC_TRY_LINK([#include <stdio.h>], [rename("this", "that")], |
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*** ../vim-7.2.299/src/fileio.c 2009-11-17 14:57:19.000000000 +0100 |
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--- src/fileio.c 2009-11-17 13:22:06.000000000 +0100 |
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115 |
*************** |
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116 |
*** 2254,2259 **** |
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117 |
--- 2254,2267 ---- |
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118 |
|
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if (!read_buffer && !read_stdin) |
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close(fd); /* errors are ignored */ |
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+ #ifdef HAVE_FD_CLOEXEC |
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+ else |
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+ { |
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+ int fdflags = fcntl(fd, F_GETFD); |
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+ if (fdflags >= 0 && (fdflags & FD_CLOEXEC) == 0) |
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+ fcntl(fd, F_SETFD, fdflags | FD_CLOEXEC); |
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+ } |
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+ #endif |
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vim_free(buffer); |
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130 |
|
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131 |
#ifdef HAVE_DUP |
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*** ../vim-7.2.299/src/memfile.c 2008-07-13 19:39:39.000000000 +0200 |
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--- src/memfile.c 2009-11-17 13:22:15.000000000 +0100 |
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134 |
*************** |
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135 |
*** 1343,1348 **** |
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136 |
--- 1343,1353 ---- |
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137 |
} |
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138 |
else |
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139 |
{ |
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140 |
+ #ifdef HAVE_FD_CLOEXEC |
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141 |
+ int fdflags = fcntl(mfp->mf_fd, F_GETFD); |
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+ if (fdflags >= 0 && (fdflags & FD_CLOEXEC) == 0) |
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+ fcntl(mfp->mf_fd, F_SETFD, fdflags | FD_CLOEXEC); |
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+ #endif |
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145 |
#ifdef HAVE_SELINUX |
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mch_copy_sec(fname, mfp->mf_fname); |
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147 |
#endif |
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148 |
*** ../vim-7.2.299/src/memline.c 2009-11-03 15:32:58.000000000 +0100 |
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--- src/memline.c 2009-11-17 13:21:40.000000000 +0100 |
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150 |
*************** |
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151 |
*** 382,388 **** |
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dp->db_index[0] = --dp->db_txt_start; /* at end of block */ |
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dp->db_free -= 1 + INDEX_SIZE; |
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dp->db_line_count = 1; |
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155 |
! *((char_u *)dp + dp->db_txt_start) = NUL; /* emtpy line */ |
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156 |
|
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157 |
return OK; |
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158 |
|
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159 |
--- 382,388 ---- |
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160 |
dp->db_index[0] = --dp->db_txt_start; /* at end of block */ |
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161 |
dp->db_free -= 1 + INDEX_SIZE; |
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162 |
dp->db_line_count = 1; |
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163 |
! *((char_u *)dp + dp->db_txt_start) = NUL; /* empty line */ |
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164 |
|
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165 |
return OK; |
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166 |
|
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167 |
*************** |
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168 |
*** 490,495 **** |
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169 |
--- 490,502 ---- |
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170 |
EMSG(_("E301: Oops, lost the swap file!!!")); |
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171 |
return; |
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172 |
} |
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173 |
+ #ifdef HAVE_FD_CLOEXEC |
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174 |
+ { |
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175 |
+ int fdflags = fcntl(mfp->mf_fd, F_GETFD); |
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176 |
+ if (fdflags >= 0 && (fdflags & FD_CLOEXEC) == 0) |
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177 |
+ fcntl(mfp->mf_fd, F_SETFD, fdflags | FD_CLOEXEC); |
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178 |
+ } |
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179 |
+ #endif |
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180 |
} |
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181 |
if (!success) |
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182 |
EMSG(_("E302: Could not rename swap file")); |
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183 |
*** ../vim-7.2.299/src/version.c 2009-11-17 16:08:12.000000000 +0100 |
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184 |
--- src/version.c 2009-11-17 17:09:43.000000000 +0100 |
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185 |
*************** |
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186 |
*** 683,684 **** |
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187 |
--- 683,686 ---- |
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188 |
{ /* Add new patch number below this line */ |
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189 |
+ /**/ |
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190 |
+ 300, |
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191 |
/**/ |
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192 |
|
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193 |
-- |
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194 |
| |
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195 |
|
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196 |
Ceci n'est pas une pipe. |
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197 |
|
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198 |
/// Bram Moolenaar -- [email protected] -- http://www.Moolenaar.net \\\ |
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/// sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\ |
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200 |
\\\ download, build and distribute -- http://www.A-A-P.org /// |
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201 |
\\\ help me help AIDS victims -- http://ICCF-Holland.org /// |