[PATCH] Fix tst-ldconfig-ld_so_conf-update and tst-glibc-hwcaps-prepend-cache with custom configure prefix value

[Adhemerval Zanella]

On 09/08/2021 18:26, Romain GEISSLER via Libc-alpha wrote:
> Hi,
> 
> I have build a recent glibc 2.34 with some non default --prefix value at
> configure time, and I have two new tests failing:
> tst-ldconfig-ld_so_conf-update and tst-glibc-hwcaps-prepend-cache. Both
> hardcodes the patch /etc/ld.so.conf which should take ${prefix} into
> account. Fixed thusly.
> 
> I tested this successfully on x86-64.
> 
> Cheers,
> Romain

The patch looks ok, just split the patch to make the libsupport
change its own patch.

> 
> From 8005e062750421f44ab9f5c22243f70185a2b682 Mon Sep 17 00:00:00 2001
> From: Romain Geissler <romain.geissler@amadeus.com>
> Date: Mon, 9 Aug 2021 20:11:47 +0000
> Subject: [PATCH] Fix tst-ldconfig-ld_so_conf-update and
>  tst-glibc-hwcaps-prepend-cache with custom configure prefix value.
> 
> ---
>  elf/tst-glibc-hwcaps-prepend-cache.c | 10 +++++++---
>  elf/tst-ldconfig-ld_so_conf-update.c | 13 ++++++++-----
>  support/Makefile                     |  3 ++-
>  support/support.h                    |  2 ++
>  support/support_paths.c              |  7 +++++++
>  5 files changed, 26 insertions(+), 9 deletions(-)
> 
> diff --git a/elf/tst-glibc-hwcaps-prepend-cache.c b/elf/tst-glibc-hwcaps-prepend-cache.c
> index 153408e14d3..1f0872b918a 100644
> --- a/elf/tst-glibc-hwcaps-prepend-cache.c
> +++ b/elf/tst-glibc-hwcaps-prepend-cache.c
> @@ -44,9 +44,13 @@ do_test (void)
>    if (dlopen (SONAME, RTLD_NOW) != NULL)
>      FAIL_EXIT1 (SONAME " is already on the search path");
>  
> -  /* Install the default implementation of libmarkermod1.so.  */
> -  xmkdirp ("/etc", 0777);
> -  support_write_file_string ("/etc/ld.so.conf", "/glibc-test/lib\n");
> +  {
> +    /* Install the default implementation of libmarkermod1.so.  */
> +    char *conf_path = xasprintf ("%s/ld.so.conf", support_sysconfdir_prefix);
> +    xmkdirp (support_sysconfdir_prefix, 0777);
> +    support_write_file_string (conf_path, "/glibc-test/lib\n");
> +    free (conf_path);
> +  }
>    xmkdirp ("/glibc-test/lib/glibc-hwcaps/prepend2", 0777);
>    xmkdirp ("/glibc-test/lib/glibc-hwcaps/prepend3", 0777);
>    {

Ok.

> diff --git a/elf/tst-ldconfig-ld_so_conf-update.c b/elf/tst-ldconfig-ld_so_conf-update.c
> index e8bd4c35986..842ab8e25b0 100644
> --- a/elf/tst-ldconfig-ld_so_conf-update.c
> +++ b/elf/tst-ldconfig-ld_so_conf-update.c
> @@ -33,7 +33,6 @@
>  
>  #define DSO "libldconfig-ld-mod.so"
>  #define DSO_DIR "/tmp/tst-ldconfig"
> -#define CONF "/etc/ld.so.conf"
>  
>  
>  static void
> @@ -64,6 +63,8 @@ do_test (void)
>  {
>    struct support_capture_subprocess result;
>  
> +  char *conf_path = xasprintf ("%s/ld.so.conf", support_sysconfdir_prefix);
> +
>    /* Create the needed directories.  */
>    xmkdirp ("/var/cache/ldconfig", 0777);
>    xmkdirp (DSO_DIR, 0777);

Ok.

> @@ -82,9 +83,9 @@ do_test (void)
>       is not searched.  */
>    TEST_VERIFY_EXIT (dlopen (DSO, RTLD_NOW | RTLD_GLOBAL) == NULL);
>  
> -  FILE *fp = xfopen (CONF, "a+");
> +  FILE *fp = xfopen (conf_path, "a+");
>    if (!fp)
> -    FAIL_EXIT1 ("creating /etc/ld.so.conf failed: %m");
> +    FAIL_EXIT1 ("creating %s failed: %m", conf_path);
>    xfclose (fp);
>  
>    /* Run ldconfig.  */

Ok.

> @@ -95,9 +96,9 @@ do_test (void)
>    TEST_VERIFY_EXIT (dlopen (DSO, RTLD_NOW | RTLD_GLOBAL) == NULL);
>  
>    /* Add tst-ldconfig directory to /etc/ld.so.conf.  */
> -  fp = xfopen (CONF, "w");
> +  fp = xfopen (conf_path, "w");
>    if (!(fwrite (DSO_DIR, 1, sizeof (DSO_DIR), fp)))
> -    FAIL_EXIT1 ("updating /etc/ld.so.conf failed: %m");
> +    FAIL_EXIT1 ("updating %s failed: %m", conf_path);
>    xfclose (fp);
>  
>    /* Try to dlopen the same DSO again, we expect this to still fail.  */
> @@ -111,6 +112,8 @@ do_test (void)
>    /* Finally, we expect dlopen to pass now.  */
>    TEST_VERIFY_EXIT (dlopen (DSO, RTLD_NOW | RTLD_GLOBAL) != NULL);
>  
> +  free (conf_path);
> +
>    return 0;
>  }
>  

Ok.

> diff --git a/support/Makefile b/support/Makefile
> index a4627817184..af086788527 100644
> --- a/support/Makefile
> +++ b/support/Makefile
> @@ -219,7 +219,8 @@ CFLAGS-support_paths.c = \
>  		-DSBINDIR_PATH=\"$(sbindir)\" \
>  		-DSLIBDIR_PATH=\"$(slibdir)\" \
>  		-DROOTSBINDIR_PATH=\"$(rootsbindir)\" \
> -		-DCOMPLOCALEDIR_PATH=\"$(complocaledir)\"
> +		-DCOMPLOCALEDIR_PATH=\"$(complocaledir)\" \
> +		-DSYSCONFDIR_PATH=\"$(sysconfdir)\"
>  
>  # In support_timespec_check_in_range we may be passed a very tight
>  # range for which we should produce a correct result for expected

Ok.

> diff --git a/support/support.h b/support/support.h
> index 834dba90977..2be56f20e64 100644
> --- a/support/support.h
> +++ b/support/support.h
> @@ -132,6 +132,8 @@ extern const char support_slibdir_prefix[];
>  extern const char support_install_rootsbindir[];
>  /* Corresponds to the install's compiled locale directory.  */
>  extern const char support_complocaledir_prefix[];
> +/* Corresponds to the install's etc/ directory.  */
> +extern const char support_sysconfdir_prefix[];
>  
>  /* Copies the file at the path FROM to TO.  If TO does not exist, it
>     is created.  If TO is a regular file, it is truncated before
> diff --git a/support/support_paths.c b/support/support_paths.c
> index d18e71e38bb..a0921ce7e90 100644
> --- a/support/support_paths.c
> +++ b/support/support_paths.c
> @@ -92,3 +92,10 @@ const char support_complocaledir_prefix[] = COMPLOCALEDIR_PATH;
>  #else
>  # error please -DCOMPLOCALEDIR_PATH=something in the Makefile
>  #endif
> +
> +#ifdef SYSCONFDIR_PATH
> +/* Corresponds to the install's etc/ directory.  */
> +const char support_sysconfdir_prefix[] = SYSCONFDIR_PATH;
> +#else
> +# error please -DSYSCONFDIR_PATH=something in the Makefile
> +#endif
> 

The usual way is to split the libsupport patch on its own patch.
The change is ok.