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Diffstat (limited to 'util/nvmutil/nvmutil.c')
-rw-r--r--util/nvmutil/nvmutil.c31
1 files changed, 11 insertions, 20 deletions
diff --git a/util/nvmutil/nvmutil.c b/util/nvmutil/nvmutil.c
index e6b4ddfb..0b3cce7a 100644
--- a/util/nvmutil/nvmutil.c
+++ b/util/nvmutil/nvmutil.c
@@ -57,7 +57,6 @@ void xorswap_buf(int n, int partnum);
void writeGbeFile(int *fd, const char *filename, size_t nw);
void xpledge(const char *promises, const char *execpromises);
void xunveil(const char *path, const char *permissions);
-void err_if(int condition);
#define FILENAME argv[1]
#define COMMAND argv[2]
@@ -66,10 +65,6 @@ void err_if(int condition);
#define SIZE_4KB 0x1000
#define SIZE_8KB 0x2000
-#define word(pos16, partnum) buf16[pos16 + (partnum << 11)]
-#define ERR() errno = errno ? errno : ECANCELED
-#define xorswap(x, y) x ^= y, y ^= x, x ^= y
-
uint16_t buf16[SIZE_4KB];
uint8_t *buf;
size_t gbe[2];
@@ -81,6 +76,12 @@ uint8_t nvmPartModified[2] = {0, 0};
uint16_t test;
uint8_t big_endian;
+#define word(pos16, partnum) buf16[pos16 + (partnum << 11)]
+#define ERR() errno = errno ? errno : ECANCELED
+#define xorswap(x, y) x ^= y, y ^= x, x ^= y
+#define xopen(fd, loc, p) if ((fd = open(loc, p)) == -1) err(ERR(), "%s", loc)
+#define err_if(x) if (x) err(ERR(), NULL)
+
int
main(int argc, char *argv[])
{
@@ -122,7 +123,7 @@ main(int argc, char *argv[])
}
}
- err_if(errno = ((strMac == NULL) && (cmd == NULL)) ? EINVAL : errno);
+ err_if((errno = ((strMac == NULL) && (cmd == NULL)) ? EINVAL : errno));
skipread[part ^ 1] = (cmd == &cmd_copy) |
(cmd == &cmd_setchecksum) | (cmd == &cmd_brick);
@@ -152,9 +153,8 @@ readGbeFile(int *fd, const char *path, int flags, size_t nr)
struct stat st;
if (opendir(path) != NULL)
err(errno = EISDIR, "%s", path);
- else if (((*fd) = open(path, flags)) == -1)
- err(ERR(), "%s", path);
- else if (fstat((*fd), &st) == -1)
+ xopen(*fd, path, flags);
+ if (fstat((*fd), &st) == -1)
err(ERR(), "%s", path);
else if ((st.st_size != SIZE_8KB))
err(errno = ECANCELED, "File `%s` not 8KiB", path);
@@ -233,8 +233,7 @@ rhex(void)
static uint8_t rnum[16];
if (!n) {
if (rfd == -1)
- if ((rfd = open("/dev/urandom", O_RDONLY)) == -1)
- err(ERR(), "/dev/urandom");
+ xopen(rfd, "/dev/urandom", O_RDONLY);
if (read(rfd, (uint8_t *) &rnum, (n = 15) + 1) == -1)
err(ERR(), "/dev/urandom");
}
@@ -326,8 +325,7 @@ validChecksum(int partnum)
void
setWord(int pos16, int partnum, uint16_t val16)
{
- gbeFileModified = 1;
- if (word(pos16, partnum) != val16)
+ if ((gbeFileModified = 1) && word(pos16, partnum) != val16)
nvmPartModified[partnum] = 1 | (word(pos16, partnum) = val16);
}
@@ -381,10 +379,3 @@ xunveil(const char *path, const char *permissions)
err(ERR(), "unveil");
#endif
}
-
-void
-err_if(int condition)
-{
- if (condition)
- err(ERR(), NULL);
-}