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buildid: Check the return values of write() calls

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Signed-off-by: Mathieu Trudel-Lapierre <mathieu.trudel-lapierre@canonical.com>
This commit is contained in:
Mathieu Trudel-Lapierre 2017-09-29 11:05:05 -04:00 committed by Peter Jones
parent dca65ca254
commit cc08ed0e28
1 changed files with 9 additions and 4 deletions
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13
buildid.c
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@ -113,6 +113,7 @@ static void handle_one(char *f)
char *b = NULL;
size_t sz;
uint8_t *data;
ssize_t written;
if (!strcmp(f, "-")) {
fd = STDIN_FILENO;
@ -132,10 +133,14 @@ static void handle_one(char *f)
b = alloca(sz * 2 + 1);
data2hex(data, sz, b);
if (b) {
write(1, f, strlen(f));
write(1, " ", 1);
write(1, b, strlen(b));
write(1, "\n", 1);
written = write(1, f, strlen(f));
if (written < 0)
errx(1, "Error writing build id");
written = write(1, " ", 1);
written = write(1, b, strlen(b));
if (written < 0)
errx(1, "Error writing build id");
written = write(1, "\n", 1);
}
}
elf_end(elf);