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Fix "Add colored output to zfs list"

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Running `zfs list -o avail rpool` resulted in a core dump.
This commit will fix this.

Run the needed overhead only, when `use_color()` is true.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Wilson <gwilson@delphix.com>
Signed-off-by: Tino Reichardt <milky-zfs@mcmilk.de>
Closes #14712
This commit is contained in:
Tino Reichardt
2023-04-05 18:57:01 +02:00
committed by Tony Hutter
parent fc2c0256c5
commit 3d9f37026d
4 changed files with 21 additions and 3 deletions
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lib/libzfs/libzfs.abi
+4
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@@ -99,6 +99,7 @@
<elf-symbol name='sa_validate_shareopts' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='snapshot_namecheck' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='unshare_one' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='use_color' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zcmd_alloc_dst_nvlist' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zcmd_expand_dst_nvlist' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zcmd_free_nvlists' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
@@ -5070,6 +5071,9 @@
<parameter type-id='9cf59a50'/>
<return type-id='48b5725f'/>
</function-decl>
<function-decl name='use_color' mangled-name='use_color' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='use_color'>
<return type-id='95e97e5e'/>
</function-decl>
<function-decl name='mkdirp' visibility='default' binding='global' size-in-bits='64'>
<parameter type-id='80f4b756'/>
<parameter type-id='d50d396c'/>
lib/libzfs/libzfs_util.c
+1 -1
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@@ -2027,7 +2027,7 @@ zfs_version_print(void)
* Return 1 if the user requested ANSI color output, and our terminal supports
* it. Return 0 for no color.
*/
static int
int
use_color(void)
{
static int use_color = -1;