[LTP] [PATCH] controllers: remove use of LINE_MAX

[Edward Liaw]

LINE_MAX is not defined in Android's bionic and seems to be a leftover
of POSIX standards.  In this case, replace the use of fgets with
getline, which will resize the line buffer if needed.  Also, drop some
unnecessarily exported variables.

Signed-off-by: Edward Liaw <edliaw@google.com>
---
 .../kernel/controllers/libcontrollers/libcontrollers.c    | 8 +++++---
 .../kernel/controllers/libcontrollers/libcontrollers.h    | 2 --
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/testcases/kernel/controllers/libcontrollers/libcontrollers.c b/testcases/kernel/controllers/libcontrollers/libcontrollers.c
index e9917271c..18f7257cc 100644
--- a/testcases/kernel/controllers/libcontrollers/libcontrollers.c
+++ b/testcases/kernel/controllers/libcontrollers/libcontrollers.c
@@ -39,11 +39,9 @@ char fullpath[PATH_MAX];
 int FLAG;
 volatile int timer_expired = 0;
 int retval;
-unsigned int num_line;
 unsigned int current_shares;
 unsigned int total_shares;
 unsigned int *shares_pointer;
-char target[LINE_MAX];
 struct dirent *dir_pointer;
 
 /*
@@ -133,6 +131,9 @@ int read_file(char *filepath, int action, unsigned int *value)
 	int num_line = 0;
 	FILE *fp;
 	int tmp;
+	size_t len;
+	char *target = NULL;
+
 	switch (action) {
 	case GET_SHARES:
 		tmp = read_shares_file(filepath);
@@ -147,8 +148,9 @@ int read_file(char *filepath, int action, unsigned int *value)
 			error_function("Could not open file", filepath);
 			return -1;
 		}
-		while (fgets(target, LINE_MAX, fp) != NULL)
+		while (getline(&target, &len, fp) != -1)
 			num_line++;
+		free(target);
 		*value = (unsigned int)num_line;
 		if (fclose(fp)) {
 			error_function("Could not close file", filepath);
diff --git a/testcases/kernel/controllers/libcontrollers/libcontrollers.h b/testcases/kernel/controllers/libcontrollers/libcontrollers.h
index 7d7b8324b..548743225 100644
--- a/testcases/kernel/controllers/libcontrollers/libcontrollers.h
+++ b/testcases/kernel/controllers/libcontrollers/libcontrollers.h
@@ -46,11 +46,9 @@ extern char fullpath[PATH_MAX];
 extern int FLAG;
 extern volatile int timer_expired;
 extern int retval;
-extern unsigned int num_line;
 extern unsigned int current_shares;
 extern unsigned int total_shares;
 extern unsigned int *shares_pointer;
-extern char target[LINE_MAX];
 extern struct dirent *dir_pointer;
 
 enum{
-- 
2.44.0.683.g7961c838ac-goog