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hosted: sanitize handling of HOME_DIR

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* HOME_DIR is now either "/" or special "<HOME>"
   * target-specific "home dir path" is defined solely by PIVOT_ROOT
 * PIVOT_ROOT path is now defined in toplevel config files
 * Make Samsung YP-R0/R1 and SONY_NWZ use PIVOT_ROOT too
 * Do not prepend PIVOT_ROOT path if the path already has it!
 * Do not play these games for __PCTOOL__ builds

Change-Id: I3d51ad902a5f9cafe45ba15ba654f30f1ec6113a
This commit is contained in:
Solomon Peachy 2020-10-11 08:26:53 -04:00
parent a5add3982b
commit db6f21e295
16 changed files with 58 additions and 68 deletions
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35
firmware/target/hosted/filesystem-app.c
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@ -36,15 +36,13 @@
#include "rbpaths.h"
#include "logf.h"
#if !(defined(BOOTLOADER) || defined(CHECKWPS) || defined(SIMULATOR))
#if defined(HIBY_LINUX)
#define PIVOT_ROOT "/mnt/sd_0"
#elif defined(FIIO_M3K)
#define PIVOT_ROOT "/mnt" // XXX check this!
#else
/* PIVOT_ROOT adds a fixed prefix to all paths */
#if defined(BOOTLOADER) || defined(CHECKWPS) || defined(SIMULATOR) || defined(__PCTOOL__)
/* We don't want to use pivot root on these! */
#undef PIVOT_ROOT
#endif
#endif // !(BOOTLOADER|WPS|SIM)
#if defined(HAVE_MULTIDRIVE) || defined(HAVE_SPECIAL_DIRS)
#if (CONFIG_PLATFORM & PLATFORM_ANDROID)
static const char rbhome[] = "/sdcard";
#elif (CONFIG_PLATFORM & (PLATFORM_SDL|PLATFORM_MAEMO|PLATFORM_PANDORA)) \
@ -54,15 +52,11 @@ static const char *rbhome;
/* YPR0, YPR1, NWZ, etc */
static const char rbhome[] = HOME_DIR;
#endif
#endif
#if !(defined(SAMSUNG_YPR0) || defined(SAMSUNG_YPR1) || defined(DX50) || \
defined(SONY_NWZ_LINUX) || defined(DX90) || defined(HIBY_LINUX) || \
defined(FIIO_M3K)) && \
!defined(__PCTOOL__)
/* Special dirs are user-accessible (and user-writable) dirs which take priority
* over the ones where Rockbox is installed to. Classic example would be
* $HOME/.config/rockbox.org vs /usr/share/rockbox */
#define HAVE_SPECIAL_DIRS
#if !defined(__PCTOOL__)
/* We don't want this for tools */
#undef HAVE_SPECIAL_DIRS
#endif
#ifdef HAVE_MULTIDRIVE
@ -202,6 +196,8 @@ const char * handle_special_dirs(const char *dir, unsigned flags,
{
(void) flags; (void) buf; (void) bufsize;
#ifdef HAVE_SPECIAL_DIRS
#define HOME_DIR_LEN (sizeof(HOME_DIR)-1)
/* This replaces HOME_DIR (ie '<HOME'>') with runtime rbhome */
if (!strncmp(HOME_DIR, dir, HOME_DIR_LEN))
{
const char *p = dir + HOME_DIR_LEN;
@ -216,8 +212,13 @@ const char * handle_special_dirs(const char *dir, unsigned flags,
dir = handle_special_links(dir, flags, buf, bufsize);
#endif
#ifdef PIVOT_ROOT
snprintf(buf, bufsize, "%s/%s", PIVOT_ROOT, dir);
dir = buf;
#define PIVOT_ROOT_LEN (sizeof(PIVOT_ROOT)-1)
/* Prepend root prefix to find actual path */
if (strncmp(PIVOT_ROOT, dir, PIVOT_ROOT_LEN))
{
snprintf(buf, bufsize, "%s/%s", PIVOT_ROOT, dir);
dir = buf;
}
#endif
return dir;
}