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Improve error reporting on file access

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By making the error reporting include strerror(errno), it gives the user
a bit more indication as to why qemu failed.  This is particularly
important for people running qemu as a non root user.

Signed-off-by: Justin M. Forbes <jforbes@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Justin M. Forbes 2009-10-01 09:42:56 -05:00 • committed by Anthony Liguori
parent 6c098407ef
commit 850810d01b
2 changed files with 16 additions and 16 deletions
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20
vl.c
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@ -2328,8 +2328,8 @@ DriveInfo *drive_init(QemuOpts *opts, void *opaque,
}
if (bdrv_open2(dinfo->bdrv, file, bdrv_flags, drv) < 0) {
fprintf(stderr, "qemu: could not open disk image %s\n",
file);
fprintf(stderr, "qemu: could not open disk image %s: %s\n",
file, strerror(errno));
return NULL;
}
@ -5566,7 +5566,7 @@ int main(int argc, char **argv, char **envp)
if (len != 1)
exit(1);
else if (status == 1) {
fprintf(stderr, "Could not acquire pidfile\n");
fprintf(stderr, "Could not acquire pidfile: %s\n", strerror(errno));
exit(1);
} else
exit(0);
@ -5593,7 +5593,7 @@ int main(int argc, char **argv, char **envp)
uint8_t status = 1;
write(fds[1], &status, 1);
} else
fprintf(stderr, "Could not acquire pid file\n");
fprintf(stderr, "Could not acquire pid file: %s\n", strerror(errno));
exit(1);
}
#endif
@ -5777,8 +5777,8 @@ int main(int argc, char **argv, char **envp)
snprintf(label, sizeof(label), "serial%d", i);
serial_hds[i] = qemu_chr_open(label, devname, NULL);
if (!serial_hds[i]) {
fprintf(stderr, "qemu: could not open serial device '%s'\n",
devname);
fprintf(stderr, "qemu: could not open serial device '%s': %s\n",
devname, strerror(errno));
exit(1);
}
}
@ -5791,8 +5791,8 @@ int main(int argc, char **argv, char **envp)
snprintf(label, sizeof(label), "parallel%d", i);
parallel_hds[i] = qemu_chr_open(label, devname, NULL);
if (!parallel_hds[i]) {
fprintf(stderr, "qemu: could not open parallel device '%s'\n",
devname);
fprintf(stderr, "qemu: could not open parallel device '%s': %s\n",
devname, strerror(errno));
exit(1);
}
}
@ -5805,8 +5805,8 @@ int main(int argc, char **argv, char **envp)
snprintf(label, sizeof(label), "virtcon%d", i);
virtcon_hds[i] = qemu_chr_open(label, devname, NULL);
if (!virtcon_hds[i]) {
fprintf(stderr, "qemu: could not open virtio console '%s'\n",
devname);
fprintf(stderr, "qemu: could not open virtio console '%s': %s\n",
devname, strerror(errno));
exit(1);
}
}