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author | smh <smh@FreeBSD.org> | 2015-11-23 14:06:21 +0000 |
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committer | smh <smh@FreeBSD.org> | 2015-11-23 14:06:21 +0000 |
commit | 7f6c6181f2daab85e5eda752b8c8e8fa450a74ee (patch) | |
tree | bcd62e6c7419409a8200944cb240043201d0e516 | |
parent | a807c265df657932ba6f849422b2c7ff771e2195 (diff) | |
download | FreeBSD-src-7f6c6181f2daab85e5eda752b8c8e8fa450a74ee.zip FreeBSD-src-7f6c6181f2daab85e5eda752b8c8e8fa450a74ee.tar.gz |
Fix dumpon compatibility with dumpdev kenv
The dumpdev kenv supports devices without the /dev/ prefix, fix dumpon to
also support this which is required after r288153.
MFC after: 1 week
Sponsored by: Multiplay
-rw-r--r-- | sbin/dumpon/dumpon.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/sbin/dumpon/dumpon.c b/sbin/dumpon/dumpon.c index eebcc69..1ecbff3 100644 --- a/sbin/dumpon/dumpon.c +++ b/sbin/dumpon/dumpon.c @@ -152,16 +152,31 @@ main(int argc, char *argv[]) usage(); if (strcmp(argv[0], "off") != 0) { - fd = open(argv[0], O_RDONLY); + char tmp[PATH_MAX]; + char *dumpdev; + + if (strncmp(argv[0], _PATH_DEV, sizeof(_PATH_DEV) - 1) == 0) { + dumpdev = argv[0]; + } else { + i = snprintf(tmp, PATH_MAX, "%s%s", _PATH_DEV, argv[0]); + if (i < 0) { + err(EX_OSERR, "%s", argv[0]); + } else if (i >= PATH_MAX) { + errno = EINVAL; + err(EX_DATAERR, "%s", argv[0]); + } + dumpdev = tmp; + } + fd = open(dumpdev, O_RDONLY); if (fd < 0) - err(EX_OSFILE, "%s", argv[0]); - check_size(fd, argv[0]); + err(EX_OSFILE, "%s", dumpdev); + check_size(fd, dumpdev); u = 0; i = ioctl(fd, DIOCSKERNELDUMP, &u); u = 1; i = ioctl(fd, DIOCSKERNELDUMP, &u); if (i == 0 && verbose) - printf("kernel dumps on %s\n", argv[0]); + printf("kernel dumps on %s\n", dumpdev); } else { fd = open(_PATH_DEVNULL, O_RDONLY); if (fd < 0) |