From: Sascha Hauer <s.hauer@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Subject: [PATCH 2/3] bootstrap_read_disk(): optionally inform the caller of the buffer size
Date: Thu, 5 Nov 2020 12:56:13 +0100 [thread overview]
Message-ID: <20201105115614.8802-2-s.hauer@pengutronix.de> (raw)
In-Reply-To: <20201105115614.8802-1-s.hauer@pengutronix.de>
From: Ulrich Ölmann <u.oelmann@pengutronix.de>
The size of the buffer allocated in the function is needed if it shall be
inspected more closely later. Therefore optionally return it via a new pointer
argument.
Signed-off-by: Ulrich Ölmann <u.oelmann@pengutronix.de>
---
arch/arm/mach-at91/bootstrap.c | 2 +-
arch/arm/mach-socfpga/xload.c | 2 +-
include/bootstrap.h | 4 ++--
lib/bootstrap/disk.c | 5 ++++-
4 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/arch/arm/mach-at91/bootstrap.c b/arch/arm/mach-at91/bootstrap.c
index 90b7b33fc9..0b1567cd23 100644
--- a/arch/arm/mach-at91/bootstrap.c
+++ b/arch/arm/mach-at91/bootstrap.c
@@ -89,7 +89,7 @@ static void at91bootstrap_boot_mmc(void)
kernel_entry_func func = NULL;
printf("Boot from mmc\n");
- func = bootstrap_read_disk("disk0.0", NULL);
+ func = bootstrap_read_disk("disk0.0", NULL, NULL);
bootstrap_boot(func, false);
bootstrap_err("... failed\n");
free(func);
diff --git a/arch/arm/mach-socfpga/xload.c b/arch/arm/mach-socfpga/xload.c
index 8be2827e62..1131cfee41 100644
--- a/arch/arm/mach-socfpga/xload.c
+++ b/arch/arm/mach-socfpga/xload.c
@@ -37,7 +37,7 @@ static __noreturn int socfpga_xload(void)
socfpga_cyclone5_mmc_init();
for (part = barebox_parts; part->mmc_disk; part++) {
- buf = bootstrap_read_disk(barebox_parts->mmc_disk, "fat");
+ buf = bootstrap_read_disk(barebox_parts->mmc_disk, "fat", NULL);
if (!buf) {
pr_info("failed to load barebox from MMC %s\n",
part->mmc_disk);
diff --git a/include/bootstrap.h b/include/bootstrap.h
index 8b3bb34a03..3e006d3cc9 100644
--- a/include/bootstrap.h
+++ b/include/bootstrap.h
@@ -25,9 +25,9 @@ static inline void* bootstrap_read_devfs(char *devname, bool use_bb, int offset,
#endif
#ifdef CONFIG_BOOTSTRAP_DISK
-void* bootstrap_read_disk(const char *devname, const char *fstype);
+void* bootstrap_read_disk(const char *devname, char *fstype, size_t *bufsize);
#else
-static inline void* bootstrap_read_disk(const char *devname, const char *fstype)
+static inline void* bootstrap_read_disk(const char *devname, char *fstype, size_t *bufsize)
{
return NULL;
}
diff --git a/lib/bootstrap/disk.c b/lib/bootstrap/disk.c
index fd016166e6..ed8b1aa407 100644
--- a/lib/bootstrap/disk.c
+++ b/lib/bootstrap/disk.c
@@ -14,7 +14,7 @@
#include <libfile.h>
#include <bootstrap.h>
-void* bootstrap_read_disk(const char *dev, const char *fstype)
+void* bootstrap_read_disk(const char *dev, char *fstype, size_t *bufsize)
{
int ret;
void *buf;
@@ -34,5 +34,8 @@ void* bootstrap_read_disk(const char *dev, const char *fstype)
return NULL;
}
+ if (bufsize)
+ *bufsize = len;
+
return buf;
}
--
2.20.1
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next prev parent reply other threads:[~2020-11-05 11:56 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-05 11:56 [PATCH 1/3] bootstrap_read_devfs(): " Sascha Hauer
2020-11-05 11:56 ` Sascha Hauer [this message]
2020-11-05 11:56 ` [PATCH 3/3] ARM: socfpga: xload: evaluate integrity of second stage barebox images Sascha Hauer
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