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util/nvmutil: handle error after check_read_or_die

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we already exit reliably in that function. the current code
is logically correct, but very weak against future changes.

this extra check is essentially redundant, but prevantative
against future changes.

Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2026-03-04 01:27:13 +00:00
parent 7d6f1a6b30
commit e28409d80b
1 changed files with 4 additions and 0 deletions
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4
util/nvmutil/nvmutil.c
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@@ -301,6 +301,8 @@ read_gbe_part(int p, int invert)
if (errno)
err(errno, "Unhandled error on read of file '%s'", fname);
if (rval != (ssize_t) SIZE_4KB)
err(ECANCELED, "Unknown error on read of file '%s'", fname);
swap(p ^ invert); /* handle big-endian host CPU */
}
@@ -426,6 +428,8 @@ read_urandom(uint8_t *rnum, size_t rsize)
if (errno)
err(errno, "Unhandled error on read of file '/dev/urandom'");
if (rval != (ssize_t) rsize)
err(ECANCELED, "Unknown error on read of file '/dev/urandom'");
}
static int