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add a comment about sed and suid bits

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Denys Vlasenko
2010-06-18 02:12:56 +02:00
parent d86b4c3907
commit 3b727ccb70
1 changed files with 2 additions and 0 deletions
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editors/sed.c
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@ -1365,6 +1365,8 @@ int sed_main(int argc UNUSED_PARAM, char **argv)
/* Set permissions/owner of output file */ /* Set permissions/owner of output file */
fstat(fileno(file), &statbuf); fstat(fileno(file), &statbuf);
/* chmod'ing AFTER chown would preserve suid/sgid bits,
* but GNU sed 4.2.1 does not preserve them either */
fchmod(nonstdoutfd, statbuf.st_mode); fchmod(nonstdoutfd, statbuf.st_mode);
fchown(nonstdoutfd, statbuf.st_uid, statbuf.st_gid); fchown(nonstdoutfd, statbuf.st_uid, statbuf.st_gid);
add_input_file(file); add_input_file(file);