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bpftools: strip path to the binary from prints #195934
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Otherwise meson's find_program() can get confused by the output; now in case of systemd build: meson.build:1059:16: ERROR: Invalid version of program, need 'bpftool' ['>= 5.6.0'] found '01'.
| @@ -443 +443,7 @@ | ||
| - bin_name = argv[0]; | ||
| + /* Strip the path if any. */ | ||
| + const char *bin_name_slash = strrchr(argv[0], '/'); |
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Another bug is assuming that there is argv[0] set here.
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We simplify the implementation and fix this by using program_invocation_short_name here. It's non-standard but implemented by at least Glibc and Musl.
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That doesn't address this case of argv[0] == NULL. We'd also need to add -D_GNU_SOURCE or similar, so the overall simplification wouldn't be so big.
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Upstream accepted a simpler approach of hard-coding the name instead, but I suppose we don't need to care and we'll just get it in some future update – at which point this patch will conflict and get dropped.
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Signed-off-by: Andrii Nakryiko <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Signed-off-by: Andrii Nakryiko <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Signed-off-by: Andrii Nakryiko <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Signed-off-by: Andrii Nakryiko <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Signed-off-by: Andrii Nakryiko <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Commands "bpftool help" or "bpftool version" use argv[0] to display the
name of the binary. While it is a convenient way to retrieve the string,
it does not always produce the most readable output. For example,
because of the way bpftool is currently packaged on Ubuntu (using a
wrapper script), the command displays the absolute path for the binary:
$ bpftool version | head -n 1
/usr/lib/linux-tools/5.15.0-50-generic/bpftool v5.15.60
More generally, there is no apparent reason for keeping the whole path
and exact binary name in this output. If the user wants to understand
what binary is being called, there are other ways to do so. This commit
replaces argv[0] with "bpftool", to simply reflect what the tool is
called. This is aligned on what "ip" or "tc" do, for example.
As an additional benefit, this seems to help with integration with
Meson for packaging [0].
[0] NixOS/nixpkgs#195934
Suggested-by: Vladimír Čunát <[email protected]>
Signed-off-by: Quentin Monnet <[email protected]>
Signed-off-by: Andrii Nakryiko <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Otherwise meson's find_program() can get confused by the output; now in case of systemd build:
meson.build:1059:16: ERROR: Invalid version of program, need 'bpftool' ['>= 5.6.0'] found '01'.
Things done
sandbox = trueset innix.conf? (See Nix manual)nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage./result/bin/)nixos/doc/manual/md-to-db.shto update generated release notes