https://bugs.kde.org/show_bug.cgi?id=515604
Bug ID: 515604
Summary: Ark causes Dolphin to freeze on the first right click
on systems that have a slow `ldd` command
Classification: Applications
Product: ark
Version First 25.12.2
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: wishlist
Priority: NOR
Component: plugins
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: ---
SUMMARY
I am working with an esoteric system where the `ldd` command is very slow, and
on which it is therefore desirable to avoid use of the `ldd` command in any way
that possible. Unfortunately, this code in Ark is causing Dolphin file browser
to freeze for a long time while running on that system the first time that
right click is used after opening Dolphin.
https://invent.kde.org/utilities/ark/-/blob/ad9d210081a6a8af0e600665bd50a5d5dc881c7a/kerfuffle/pluginmanager.cpp#L271
STEPS TO REPRODUCE
1. Build and reinstall glibc with this patch which simulates the presence of
the system that has the slow `ldd` command
```diff
--- a/elf/ldd.bash.in
+++ b/elf/ldd.bash.in
@@ -135,6 +135,7 @@ esac
result=0
for file do
+ sleep 10
# We don't list the file name when there is only one.
test $single_file = t || echo "${file}:"
case $file in
```
Example code to do this on Arch Linux:
```
sudo pacman -Syyu
sudo pacman -S base-devel devtools
pkgctl repo clone --protocol=https glibc
cd glibc
git apply -v << 'EOF'
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -48,6 +48,8 @@ prepare() {
[[ -d glibc-$pkgver ]] && ln -s glibc-$pkgver glibc
cd glibc
+
+ patch -p1 < ../../ldd.patch
}
build() {
@@ -134,6 +136,7 @@ _skip_test() {
}
check() (
+ return 0
cd glibc-build
# adjust/remove buildflags that cause false-positive testsuite failures
diff --git a/ldd.patch b/ldd.patch
new file mode 100644
index 0000000..c477e67
--- /dev/null
+++ b/ldd.patch
@@ -0,0 +1,12 @@
+diff --git a/elf/ldd.bash.in b/elf/ldd.bash.in
+index 2d3df6e57e..d8c7f337ba 100644
+--- a/elf/ldd.bash.in
++++ b/elf/ldd.bash.in
+@@ -135,6 +135,7 @@ esac
+
+ result=0
+ for file do
++ sleep 10
+ # We don't list the file name when there is only one.
+ test $single_file = t || echo "${file}:"
+ case $file in
EOF
makepkg -sifC
```
2. Install both Ark and Dolphin,
```bash
sudo pacman -S ark dolphin
```
3. Close app running instances of Dolphin, then open Dolphin again and right
click
```bash
pkill dolphin
dolphin
```
OBSERVED RESULT
Dolphin freezes and does not respond for more than 10 seconds
EXPECTED RESULT
The presence or absence of LZO support in `libarchive` should be calculated
some other way that does not involve the use of the `ldd` command, preferably
at build-time rather than run-time if possible.
SOFTWARE/OS VERSIONS
Windows: Not tested
macOS: Not tested
Linux: Arch Linux
KDE Plasma Version: 6.5.5
KDE Frameworks Version: 6.22.0
Qt Version: 6.10.2
`ldd` version: ldd (GNU libc) 2.42 (modified, crafted behavior)
Graphics Platform: Wayland
Dolphin version: 25.12.2
Ark version: 25.12.2
ADDITIONAL INFORMATION
Esoteric system that has a slow `ldd` command is Android, specifically the
Termux App package of `ldd` for Android
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