[PATCH 03/63] perf tests: Use shebangs in the shell scripts

[Arnaldo Carvalho de Melo]

From: Michael Petlan <mpetlan@xxxxxxxxxx>

Since the first line was used as a test identification, it needs to be
skipped by shell_test__description() function now.

Further notes from Hendrik:

It might be worth to note that adding the shebang is necessary to spot
them as scripts.

Using /bin/sh looks fine to.  Just briefly checked whether the scripts
contains some bash-specifics, which is not the case.

Signed-off-by: Michael Petlan <mpetlan@xxxxxxxxxx>
Reviewed-by: Hendrik Brueckner <brueckner@xxxxxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
LPU-Reference: 2127419430.57657104.1542836358464.JavaMail.zimbra@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/tests/builtin-test.c                           | 3 +++
 tools/perf/tests/shell/probe_vfs_getname.sh               | 1 +
 tools/perf/tests/shell/record+probe_libc_inet_pton.sh     | 1 +
 tools/perf/tests/shell/record+script_probe_vfs_getname.sh | 1 +
 tools/perf/tests/shell/trace+probe_vfs_getname.sh         | 1 +
 5 files changed, 7 insertions(+)

diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index 12c09e0ece71..9852b5d624a5 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -424,6 +424,9 @@ static const char *shell_test__description(char *description, size_t size,
 	if (!fp)
 		return NULL;
 
+	/* Skip shebang */
+	while (fgetc(fp) != '\n');
+
 	description = fgets(description, size, fp);
 	fclose(fp);
 
diff --git a/tools/perf/tests/shell/probe_vfs_getname.sh b/tools/perf/tests/shell/probe_vfs_getname.sh
index 9b7635184dc2..46e076e3c537 100755
--- a/tools/perf/tests/shell/probe_vfs_getname.sh
+++ b/tools/perf/tests/shell/probe_vfs_getname.sh
@@ -1,3 +1,4 @@
+#!/bin/sh
 # Add vfs_getname probe to get syscall args filenames
 #
 # Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>, 2017
diff --git a/tools/perf/tests/shell/record+probe_libc_inet_pton.sh b/tools/perf/tests/shell/record+probe_libc_inet_pton.sh
index cab7b0aea6ea..61c9f8fc6fa1 100755
--- a/tools/perf/tests/shell/record+probe_libc_inet_pton.sh
+++ b/tools/perf/tests/shell/record+probe_libc_inet_pton.sh
@@ -1,3 +1,4 @@
+#!/bin/sh
 # probe libc's inet_pton & backtrace it with ping
 
 # Installs a probe on libc's inet_pton function, that will use uprobes,
diff --git a/tools/perf/tests/shell/record+script_probe_vfs_getname.sh b/tools/perf/tests/shell/record+script_probe_vfs_getname.sh
index ba29535b8580..9b073e7fa88c 100755
--- a/tools/perf/tests/shell/record+script_probe_vfs_getname.sh
+++ b/tools/perf/tests/shell/record+script_probe_vfs_getname.sh
@@ -1,3 +1,4 @@
+#!/bin/sh
 # Use vfs_getname probe to get syscall args filenames
 
 # Uses the 'perf test shell' library to add probe:vfs_getname to the system
diff --git a/tools/perf/tests/shell/trace+probe_vfs_getname.sh b/tools/perf/tests/shell/trace+probe_vfs_getname.sh
index 4ce276efe6b4..50109f27ca07 100755
--- a/tools/perf/tests/shell/trace+probe_vfs_getname.sh
+++ b/tools/perf/tests/shell/trace+probe_vfs_getname.sh
@@ -1,3 +1,4 @@
+#!/bin/sh
 # Check open filename arg using perf trace + vfs_getname
 
 # Uses the 'perf test shell' library to add probe:vfs_getname to the system
-- 
2.19.2