|author||Rich Felker <email@example.com>||2013-08-17 22:21:11 -0400|
|committer||Rich Felker <firstname.lastname@example.org>||2013-08-17 22:21:11 -0400|
replace system's install command with a shell script
the historical (non-standardized) install command is really inappropriate for installing binaries/libraries on a system that utilizes memory-mapped executable files. rather than replacing an existing file atomically, it overwrites the existing file. this can cause running programs to see a partially-modified version of the file, resulting in unpredictable behavior, or SIGBUS. a MAP_COPY mode for mmap would get around this problem, but Linux lacks MAP_COPY. the shell script added with this commit works around the problem by writing temporary files and moving them into place. unlike the historical install utility, it also support a -l option for installing a symbolic link atomically, via the same method.
Diffstat (limited to '.gitignore')
0 files changed, 0 insertions, 0 deletions