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nvmutil: macro safety

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maximum safety.

Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2026-05-26 21:41:02 +01:00
parent bc4bc4b67e
commit 049ee793db
1 changed files with 32 additions and 14 deletions
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util/nvmutil/nvmutil.c
+32 -14
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@@ -77,26 +77,41 @@ op_t op[] = {
};
void (*cmd)(void) = NULL;
#define err_if(x) if (x) err(EXIT_FAILURE, "%s", filename)
#define err_if(x) \
do { \
if (x) { \
err(EXIT_FAILURE, "%s", filename); \
} \
} while(0)
#define xopen(f,l,p) \
do { \
if ((f = open_on_eintr(l, p)) == -1) \
err(EXIT_FAILURE, "%s", l); \
if (fstat(f, &st) == -1) \
err(EXIT_FAILURE, "%s", l); \
if ((f = open_on_eintr(l, p)) == -1) { \
err(EXIT_FAILURE, "%s", l); \
} \
if (fstat(f, &st) == -1) { \
err(EXIT_FAILURE, "%s", l); \
} \
} while(0)
#define word(pos16, partnum) ((uint16_t *) gbe[partnum])[pos16]
#define setWord(pos16, p, val16) if (word(pos16, p) != val16) \
nvmPartChanged[p] = 1 | (word(pos16, p) = val16)
#define word(pos16, partnum) \
(((uint16_t *) gbe[partnum])[pos16])
#define SUCCESS(x) ((x) >= 0)
#define setWord(pos16, p, val16) \
do { \
if (word(pos16, p) != val16) { \
nvmPartChanged[p] = 1 | (word(pos16, p) = val16); \
} \
} while(0)
#define SUCCESS(x) \
((x) >= 0)
#define reset_caller_errno(return_value) \
do { \
if (SUCCESS(return_value) && (!errno)) \
errno = saved_errno; \
if (SUCCESS(return_value) && (!errno)) { \
errno = saved_errno; \
} \
} while (0)
int
@@ -726,21 +741,24 @@ if_err_sys(int condition)
#define fs_err_retry() \
do { \
if ((rval == -1) && \
(errno == EINTR)) \
(errno == EINTR)) { \
return 1; \
if (rval >= 0 && !errno) \
} \
if (rval >= 0 && !errno) { \
errno = saved_errno; \
return 0; \
} \
} while(0)
int
fs_retry(int saved_errno, int rval)
{
fs_err_retry();
return 0;
}
int
rw_retry(int saved_errno, ssize_t rval)
{
fs_err_retry();
return 0;
}