Rename getline to fs_getline for fs_mgr

fs_mgr defines its own version of getline and uses it
internally. This leads to a build error if getline is
also defined in bionic, since fs_mgr will see readline
as defined internally.

Rename getline in fs_mgr to a local name (fs_getline)
so that there will no longer be any conflicts.

This is needed it we want to add getline in bionic.

Change-Id: I3a32be71a645e122629802d98ff8f9ab9c419e86
Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
diff --git a/fs_mgr/fs_mgr.c b/fs_mgr/fs_mgr.c
index 0361ab8..e117a0b 100644
--- a/fs_mgr/fs_mgr.c
+++ b/fs_mgr/fs_mgr.c
@@ -167,7 +167,7 @@
  * then return an empty buffer.  This effectively ignores lines that are too long.
  * On EOF, return null.
  */
-static char *getline(char *buf, int size, FILE *file)
+static char *fs_getline(char *buf, int size, FILE *file)
 {
     int cnt = 0;
     int eof = 0;
@@ -241,7 +241,7 @@
     }
 
     entries = 0;
-    while (getline(line, sizeof(line), fstab_file)) {
+    while (fs_getline(line, sizeof(line), fstab_file)) {
         /* if the last character is a newline, shorten the string by 1 byte */
         len = strlen(line);
         if (line[len - 1] == '\n') {
@@ -268,7 +268,7 @@
     fseek(fstab_file, 0, SEEK_SET);
 
     cnt = 0;
-    while (getline(line, sizeof(line), fstab_file)) {
+    while (fs_getline(line, sizeof(line), fstab_file)) {
         /* if the last character is a newline, shorten the string by 1 byte */
         len = strlen(line);
         if (line[len - 1] == '\n') {