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nvmutil: split pwrite handling from writeGbe

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handle it in a separate function, for clarity.

the main function just checks each part whether it
changed, and then passes control to writeGbe_part.

Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2026-02-23 13:41:37 +00:00
parent 261c41a3c3
commit e1d8773c54
1 changed files with 12 additions and 9 deletions
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util/nvmutil/nvmutil.c
+12 -9
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@@ -18,7 +18,7 @@ void cmd_setchecksum(void), cmd_brick(void), swap(int partnum), writeGbe(void),
cmd_dump(void), cmd_setmac(void), nvmalloc(void), readGbe(void),
checkdir(const char *path), macf(int partnum), hexdump(int partnum),
parseMacString(const char *strMac, uint16_t *mac), cmd_swap(void),
openFiles(const char *path), cmd_copy(void);
openFiles(const char *path), cmd_copy(void), writeGbe_part(int);
int goodChecksum(int partnum);
uint8_t hextonum(char chs), rhex(void);
@@ -421,18 +421,21 @@ void
writeGbe(void)
{
for (int p = 0; p < 2; p++) {
if ((!nvmPartChanged[p]) || (flags == O_RDONLY))
continue;
swap(p); /* swap bytes on big-endian host CPUs */
if(pwrite(fd, (uint8_t *) gbe[p], nf, p * partsize) != nf)
err(ERR(), "Couldn't write %ld bytes to '%s' part '%d'",
nf, filename, p);
if ((nvmPartChanged[p]) && (flags != O_RDONLY))
writeGbe_part(p);
}
err_if(close(fd) == -1);
}
void
writeGbe_part(int p)
{
swap(p); /* swap bytes on big-endian host CPUs */
if(pwrite(fd, (uint8_t *) gbe[p], nf, p * partsize) != nf)
err(ERR(), "Can't write %ld b to '%s' p%d", nf, filename, p);
}
void
swap(int partnum)
{