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vl.c: fix warning with _FORTIFY_SOURCE 

CC    i386-softmmu/vl.o
cc1: warnings being treated as errors
/usr/src/RPM/BUILD/qemu-0.11.92/vl.c: In function 'qemu_event_increment':
/usr/src/RPM/BUILD/qemu-0.11.92/vl.c:3404: error: ignoring return value of 'write', declared with attribute warn_unused_result
/usr/src/RPM/BUILD/qemu-0.11.92/vl.c: In function 'main':
/usr/src/RPM/BUILD/qemu-0.11.92/vl.c:5774: error: ignoring return value of 'write', declared with attribute warn_unused_result
/usr/src/RPM/BUILD/qemu-0.11.92/vl.c:6064: error: ignoring return value of 'chdir', declared with attribute warn_unused_result
/usr/src/RPM/BUILD/qemu-0.11.92/vl.c:6083: error: ignoring return value of 'chdir', declared with attribute warn_unused_result
make[1]: *** [vl.o] Error 1

Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Kirill A. Shutemov 2010-01-20 00:56:18 +01:00 committed by Anthony Liguori
parent 9f99cee7fa
commit dc330e282a
1 changed files with 18 additions and 4 deletions
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22
vl.c
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@ -3185,11 +3185,17 @@ static int io_thread_fd = -1;
static void qemu_event_increment(void) static void qemu_event_increment(void)
{ {
static const char byte = 0; static const char byte = 0;
ssize_t ret;
if (io_thread_fd == -1) if (io_thread_fd == -1)
return; return;
write(io_thread_fd, &byte, sizeof(byte)); ret = write(io_thread_fd, &byte, sizeof(byte));
if (ret < 0 && (errno != EINTR && errno != EAGAIN)) {
fprintf(stderr, "qemu_event_increment: write() filed: %s\n",
strerror(errno));
exit (1);
}
} }
static void qemu_event_read(void *opaque) static void qemu_event_read(void *opaque)
@ -5647,7 +5653,9 @@ int main(int argc, char **argv, char **envp)
#ifndef _WIN32 #ifndef _WIN32
if (daemonize) { if (daemonize) {
uint8_t status = 1; uint8_t status = 1;
write(fds[1], &status, 1); if (write(fds[1], &status, 1) != 1) {
perror("daemonize. Writing to pipe\n");
}
} else } else
#endif #endif
fprintf(stderr, "Could not acquire pid file: %s\n", strerror(errno)); fprintf(stderr, "Could not acquire pid file: %s\n", strerror(errno));
@ -5946,7 +5954,10 @@ int main(int argc, char **argv, char **envp)
if (len != 1) if (len != 1)
exit(1); exit(1);
chdir("/"); if (chdir("/")) {
perror("not able to chdir to /");
exit(1);
}
TFR(fd = qemu_open("/dev/null", O_RDWR)); TFR(fd = qemu_open("/dev/null", O_RDWR));
if (fd == -1) if (fd == -1)
exit(1); exit(1);
@ -5965,7 +5976,10 @@ int main(int argc, char **argv, char **envp)
fprintf(stderr, "chroot failed\n"); fprintf(stderr, "chroot failed\n");
exit(1); exit(1);
} }
chdir("/"); if (chdir("/")) {
perror("not able to chdir to /");
exit(1);
}
} }
if (run_as) { if (run_as) {