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Check the OF_getprop() return value before proceeding. Allocate only as

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much space as needed for the mode buffer. Use strcmp, relying on OF giving
back NULL terminated strings.

Submitted by:	marius
Approved by:	nwhitehorn (mentor)
This commit is contained in:
Andreas Tobler 2010-11-20 19:23:16 +00:00
parent 18709a09ed
commit 18ed1960fc
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=215577
1 changed files with 4 additions and 4 deletions
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8
sys/boot/ofw/libofw/openfirm.c
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@ -77,7 +77,7 @@ void
OF_init(int (*openfirm)(void *))
{
phandle_t options;
char mode[8];
char mode[sizeof("true")];
openfirmware = openfirm;
@ -93,13 +93,13 @@ OF_init(int (*openfirm)(void *))
if (OF_getprop(chosen, "mmu", &mmu, sizeof(mmu)) == -1)
OF_exit();
/*
/*
* Check if we run in real mode. If so, we do not need to map
* memory later on.
*/
options = OF_finddevice("/options");
OF_getprop(options, "real-mode?", mode, sizeof(mode));
if (strncmp(mode, "true", 4) == 0)
if (OF_getprop(options, "real-mode?", mode, sizeof(mode)) > 0 &&
strcmp(mode, "true") == 0)
real_mode = 1;
}