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author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2017-09-04 17:07:16 -0300 |
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committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2017-09-08 16:33:39 +0200 |
commit | ffca890177bbf0980b66bc3a6d4d25c481957348 (patch) | |
tree | d8089db57032126b04c27cee659c90e0eea7e995 /sysdeps | |
parent | 5a79f97554af6f2eb0a654f844b3d1f56937064d (diff) | |
download | glibc-ffca890177bbf0980b66bc3a6d4d25c481957348.tar.gz glibc-ffca890177bbf0980b66bc3a6d4d25c481957348.tar.xz glibc-ffca890177bbf0980b66bc3a6d4d25c481957348.zip |
posix: fix glob bugs with long login names
Current glob implementation allows unlimited user name for home directory construction on GLOB_TILDE case. To accomplish it glob either construct a name on stack if size are small enough (based on current alloca_used) or in heap otherwise. This patch simplifies storage allocation by using the same scratch buffer for both get_rlogin_r and getpwnam_r. This also syncs with gnulib commit 064df0b (glob: fix bugs with long login names). Checked on x86_64-linux-gnu and on a build using build-many-glibcs.py for all major architectures. * posix/glob.c (GET_LOGIN_NAME_MAX): Remove. (glob): Use the same scratch buffer for both getlogin_r and getpwnam_r. Don’t require preallocation of the login name. This simplifies storage allocation, and corrects the handling of long login names.
Diffstat (limited to 'sysdeps')
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