lib/prefix_flag.c: Remove 't' flag from fopen(3)

It is a Windows extension ignored by musl and glibc.  It is not in POSIX
nor ISO C.

Since most of our calls to fopen(3) don't use it, let's be consistent
and not use it anywhere.

Closes: <https://github.com/shadow-maint/shadow/issues/1541>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Alejandro Colomar <alx@kernel.org>

diff --git a/lib/prefix_flag.c b/lib/prefix_flag.c
index 5ca9e64c0c47d87f1e99ea7e5ac749259361a98a..a28db702c309c95d5c30d58cebaf76423d56d778 100644 (file)
--- a/lib/prefix_flag.c
+++ b/lib/prefix_flag.c
@@ -154,7 +154,7 @@ extern struct group *prefix_getgrnam(const char *name)
                FILE* fg;
                struct group * grp = NULL;
 
-               fg = fopen(group_db_file, "rt");
+               fg = fopen(group_db_file, "r");
                if (!fg)
                        return NULL;
                while (NULL != (grp = fgetgrent(fg))) {
@@ -174,7 +174,7 @@ extern struct group *prefix_getgrgid(gid_t gid)
                FILE* fg;
                struct group * grp = NULL;
 
-               fg = fopen(group_db_file, "rt");
+               fg = fopen(group_db_file, "r");
                if (!fg)
                        return NULL;
                while (NULL != (grp = fgetgrent(fg))) {
@@ -194,7 +194,7 @@ extern struct passwd *prefix_getpwuid(uid_t uid)
                FILE* fg;
                struct passwd *pwd = NULL;
 
-               fg = fopen(passwd_db_file, "rt");
+               fg = fopen(passwd_db_file, "r");
                if (!fg)
                        return NULL;
                while (NULL != (pwd = fgetpwent(fg))) {
@@ -214,7 +214,7 @@ extern struct passwd *prefix_getpwnam(const char* name)
                FILE* fg;
                struct passwd *pwd = NULL;
 
-               fg = fopen(passwd_db_file, "rt");
+               fg = fopen(passwd_db_file, "r");
                if (!fg)
                        return NULL;
                while (NULL != (pwd = fgetpwent(fg))) {
@@ -236,7 +236,7 @@ extern int prefix_getpwnam_r(const char* name, struct passwd* pwd,
                FILE* fg;
                int ret = 0;
 
-               fg = fopen(passwd_db_file, "rt");
+               fg = fopen(passwd_db_file, "r");
                if (!fg)
                        return errno;
                while ((ret = fgetpwent_r(fg, pwd, buf, buflen, result)) == 0) {
@@ -257,7 +257,7 @@ extern struct spwd *prefix_getspnam(const char* name)
                FILE* fg;
                struct spwd *sp = NULL;
 
-               fg = fopen(spw_db_file, "rt");
+               fg = fopen(spw_db_file, "r");
                if (!fg)
                        return NULL;
                while (NULL != (sp = fgetspent(fg))) {
@@ -281,7 +281,7 @@ extern void prefix_setpwent(void)
        if (fp_pwent)
                fclose (fp_pwent);
 
-       fp_pwent = fopen(passwd_db_file, "rt");
+       fp_pwent = fopen(passwd_db_file, "r");
        if (!fp_pwent)
                return;
 }
@@ -315,7 +315,7 @@ extern void prefix_setgrent(void)
        if (fp_grent)
                fclose (fp_grent);
 
-       fp_grent = fopen(group_db_file, "rt");
+       fp_grent = fopen(group_db_file, "r");
        if (!fp_grent)
                return;
 }