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patch 8.0.1300: file permissions may end up wrong when writing

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Problem:    File permissions may end up wrong when writing.
Solution:   Use fchmod() instead of chmod() when possible.  Don't truncate
            until we know we can change the file.
This commit is contained in:
Bram Moolenaar
2017-11-16 17:03:45 +01:00
parent a42ad57e48
commit cd142e3369
7 changed files with 88 additions and 24 deletions
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4
src/auto/configure vendored
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@@ -12090,13 +12090,13 @@ if test "x$vim_cv_getcwd_broken" = "xyes" ; then
fi
for ac_func in fchdir fchown fsync getcwd getpseudotty \
for ac_func in fchdir fchown fchmod fsync getcwd getpseudotty \
getpwent getpwnam getpwuid getrlimit gettimeofday getwd lstat \
memset mkdtemp nanosleep opendir putenv qsort readlink select setenv \
getpgid setpgid setsid sigaltstack sigstack sigset sigsetjmp sigaction \
sigprocmask sigvec strcasecmp strerror strftime stricmp strncasecmp \
strnicmp strpbrk strtol tgetent towlower towupper iswupper \
usleep utime utimes mblen
usleep utime utimes mblen ftruncate
do :
as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"