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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>
This commit is contained in:
Alexander Kapshuk 2020-02-09 16:00:57 +02:00 committed by Greg Kroah-Hartman
parent bb6d3fb354
commit ff5cd9accb
1 changed files with 7 additions and 17 deletions
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24
scripts/ver_linux
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@ -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"))