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make_ext4fs: explicitly call setlocale() before creating image

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The alphasort(3) function, which is used as comparison function for
scandir(3) is locale dependent (at least in glibc, in which it defers to
strcoll(3)). This patch explicitly calls setlocale(3), setting the
locale to "C".

Currently, there are no other calls to setlocale(), so this does not
change the behaviour. However, we'd like to be sure that in the future
no-one will break that.

Signed-off-by: Wojtek Porczyk <woju@invisiblethingslab.com>
This commit is contained in:
Wojtek Porczyk 2015-12-02 16:08:01 +01:00 committed by Jo-Philipp Wich
parent 98e3d5c1ce
commit bd53eaafbc
1 changed files with 4 additions and 0 deletions
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make_ext4fs.c
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@ -33,6 +33,7 @@
#include <unistd.h> #include <unistd.h>
#include <sys/stat.h> #include <sys/stat.h>
#include <sys/types.h> #include <sys/types.h>
#include <locale.h>
/* TODO: Not implemented: /* TODO: Not implemented:
Allocating blocks in the same block group as the file inode Allocating blocks in the same block group as the file inode
@ -66,6 +67,9 @@ static u32 build_directory_structure(const char *full_path, const char *dir_path
u32 dirs = 0; u32 dirs = 0;
bool needs_lost_and_found = false; bool needs_lost_and_found = false;
/* alphasort is locale-dependent; let's fix the locale to some sane value */
setlocale(LC_COLLATE, "C");
if (full_path) { if (full_path) {
entries = scandir(full_path, &namelist, filter_dot, (void*)alphasort); entries = scandir(full_path, &namelist, filter_dot, (void*)alphasort);
if (entries < 0) { if (entries < 0) {