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| author | Petr Uzel | 2012-05-15 10:49:02 +0200 |
|---|---|---|
| committer | Karel Zak | 2012-05-15 11:32:36 +0200 |
| commit | f80e9bc30a2ae9032790b888abc6ffc8ca90a940 (patch) | |
| tree | 0487dfa6dd1dfa954ba652d12af83d2b2430b2ea /include/all-io.h | |
| parent | include: rename writeall.h to all-io.h (diff) | |
| download | kernel-qcow2-util-linux-f80e9bc30a2ae9032790b888abc6ffc8ca90a940.tar.gz kernel-qcow2-util-linux-f80e9bc30a2ae9032790b888abc6ffc8ca90a940.tar.xz kernel-qcow2-util-linux-f80e9bc30a2ae9032790b888abc6ffc8ca90a940.zip | |
libuuid: move read_all to include/all-io.h
Signed-off-by: Petr Uzel <petr.uzel@suse.cz>
Diffstat (limited to 'include/all-io.h')
| -rw-r--r-- | include/all-io.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/include/all-io.h b/include/all-io.h index 4d1ae1e53..b79d702bd 100644 --- a/include/all-io.h +++ b/include/all-io.h @@ -44,4 +44,29 @@ static inline int fwrite_all(const void *ptr, size_t size, return 0; } +static inline ssize_t read_all(int fd, char *buf, size_t count) +{ + ssize_t ret; + ssize_t c = 0; + int tries = 0; + + memset(buf, 0, count); + while (count > 0) { + ret = read(fd, buf, count); + if (ret <= 0) { + if ((errno == EAGAIN || errno == EINTR || ret == 0) && + (tries++ < 5)) + continue; + return c ? c : -1; + } + if (ret > 0) + tries = 0; + count -= ret; + buf += ret; + c += ret; + } + return c; +} + + #endif /* UTIL_LINUX_ALL_IO_H */ |