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| author | Alexander Kapshuk <alexander.kapshuk@gmail.com> | 2020-02-09 17:00:57 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-11 00:35:15 +0300 |
| commit | ff5cd9accbc724a793904c6e401040c85be89748 (patch) | |
| tree | 31e4b06f076761f4208ee81eacb1775a40f009d2 /scripts/ver_linux | |
| parent | bb6d3fb354c5ee8d6bde2d576eb7220ea09862b9 (diff) | |
| download | linux-ff5cd9accbc724a793904c6e401040c85be89748.tar.xz | |
ver_linux: Query ld cache for versions of libc/libcpp run-time
Query ld cache for versions of both libc and libcpp run-time, instead
of querying /proc/self/maps for libc run-time, and ld cache for libcpp
run-time, thus reducing code size and complexity.
Signed-off-by: Alexander Kapshuk <alexander.kapshuk@gmail.com>
Link: https://lore.kernel.org/r/20200209140057.20181-1-alexander.kapshuk@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'scripts/ver_linux')
| -rwxr-xr-x | scripts/ver_linux | 24 |
1 files changed, 7 insertions, 17 deletions
diff --git a/scripts/ver_linux b/scripts/ver_linux index 85005d6b7f10..0968a3070eff 100755 --- a/scripts/ver_linux +++ b/scripts/ver_linux @@ -14,6 +14,8 @@ BEGIN { printf("\n") vernum = "[0-9]+([.]?[0-9]+)+" + libc = "libc[.]so[.][0-9]+$" + libcpp = "(libg|stdc)[+]+[.]so[.][0-9]+$" printversion("GNU C", version("gcc -dumpversion")) printversion("GNU Make", version("make --version")) @@ -35,26 +37,14 @@ BEGIN { printversion("Bison", version("bison --version")) printversion("Flex", version("flex --version")) - while (getline <"/proc/self/maps" > 0) { - if (/libc.*\.so$/) { - n = split($0, procmaps, "/") - if (match(procmaps[n], vernum)) { - ver = substr(procmaps[n], RSTART, RLENGTH) - printversion("Linux C Library", ver) - break - } - } + while ("ldconfig -p 2>/dev/null" | getline > 0) { + if ($NF ~ libc && !seen[ver = version("readlink " $NF)]++) + printversion("Linux C Library", ver) + else if ($NF ~ libcpp && !seen[ver = version("readlink " $NF)]++) + printversion("Linux C++ Library", ver) } printversion("Dynamic linker (ldd)", version("ldd --version")) - - while ("ldconfig -p 2>/dev/null" | getline > 0) { - if (/(libg|stdc)[+]+\.so/) { - libcpp = $NF - break - } - } - printversion("Linux C++ Library", version("readlink " libcpp)) printversion("Procps", version("ps --version")) printversion("Net-tools", version("ifconfig --version")) printversion("Kbd", version("loadkeys -V")) |