diff options
| author | Theodore Ts'o <tytso@mit.edu> | 2001-11-26 21:05:36 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2001-11-26 21:05:36 -0500 |
| commit | 8880e7599ced6d047626dd45665b765d0f5eded5 (patch) | |
| tree | 7989253152eed9dca302b7c7d1f8acf2dc5583e1 /lib | |
| parent | aa4a58ba2492106695951e4a4082c242ca74b06f (diff) | |
| download | e2fsprogs-8880e7599ced6d047626dd45665b765d0f5eded5.tar.gz | |
unix_io.c (unix_open): Work around a bug in 2.4.10+ kernels by
trying to unset the filesize limit if at all possible,
if a block device is getting opened. (The filesize limit
shouldn't be applied against writes to a block device, but
starting in 2.4.10, the kernel is doing this.)
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/ext2fs/ChangeLog | 8 | ||||
| -rw-r--r-- | lib/ext2fs/unix_io.c | 20 |
2 files changed, 28 insertions, 0 deletions
diff --git a/lib/ext2fs/ChangeLog b/lib/ext2fs/ChangeLog index 903b4a2f..419feffa 100644 --- a/lib/ext2fs/ChangeLog +++ b/lib/ext2fs/ChangeLog @@ -1,3 +1,11 @@ +2001-11-26 Theodore Tso <tytso@valinux.com> + + * unix_io.c (unix_open): Work around a bug in 2.4.10+ kernels by + trying to unset the filesize limit if at all possible, + if a block device is getting opened. (The filesize limit + shouldn't be applied against writes to a block device, but + starting in 2.4.10, the kernel is doing this.) + 2001-11-05 Theodore Tso <tytso@valinux.com> * mkjournal.c (ext2fs_add_journal_inode): When creating a .journal diff --git a/lib/ext2fs/unix_io.c b/lib/ext2fs/unix_io.c index 40bb6c2e..1e01d285 100644 --- a/lib/ext2fs/unix_io.c +++ b/lib/ext2fs/unix_io.c @@ -30,6 +30,7 @@ #if HAVE_SYS_TYPES_H #include <sys/types.h> #endif +#include <sys/resource.h> #include "ext2_fs.h" #include "ext2fs.h" @@ -293,6 +294,7 @@ static errcode_t unix_open(const char *name, int flags, io_channel *channel) struct unix_private_data *data = NULL; errcode_t retval; int open_flags; + struct stat st; if (name == 0) return EXT2_ET_BAD_DEVICE_NAME; @@ -335,6 +337,24 @@ static errcode_t unix_open(const char *name, int flags, io_channel *channel) retval = errno; goto cleanup; } + /* + * Work around a bug in 2.4.10+ kernels where writes to block + * devices are wrongly getting hit by the filesize limit. + */ + if ((flags & IO_FLAG_RW) && + (fstat(data->dev, &st) == 0) && + (S_ISBLK(st.st_mode))) { + struct rlimit rlim; + + rlim.rlim_cur = RLIM_INFINITY; + rlim.rlim_max = RLIM_INFINITY; + setrlimit(RLIMIT_FSIZE, &rlim); + getrlimit(RLIMIT_FSIZE, &rlim); + if (rlim.rlim_cur != rlim.rlim_max) { + rlim.rlim_cur = rlim.rlim_max; + setrlimit(RLIMIT_FSIZE, &rlim); + } + } *channel = io; return 0; |