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author | Frans Kaashoek <[email protected]> | 2016-09-19 07:01:30 -0400 |
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committer | Frans Kaashoek <[email protected]> | 2016-09-19 07:01:30 -0400 |
commit | 89826f41bd5c96e6b13692d03d08049c912b9365 (patch) | |
tree | e8e5b12bb918302cd18f6889718ee359e1b33632 /cat.c | |
parent | 912575ad12b7eacc2b0074e3a91843debd52d5f9 (diff) | |
download | xv6-labs-89826f41bd5c96e6b13692d03d08049c912b9365.tar.gz xv6-labs-89826f41bd5c96e6b13692d03d08049c912b9365.tar.bz2 xv6-labs-89826f41bd5c96e6b13692d03d08049c912b9365.zip |
Check result of write (thans to Alexander Kapshuk <alexander.kapshuk@gmail)
Diffstat (limited to 'cat.c')
-rw-r--r-- | cat.c | 8 |
1 files changed, 6 insertions, 2 deletions
@@ -9,8 +9,12 @@ cat(int fd) { int n; - while((n = read(fd, buf, sizeof(buf))) > 0) - write(1, buf, n); + while((n = read(fd, buf, sizeof(buf))) > 0) { + if (write(1, buf, n) != n) { + printf(1, "cat: write error\n"); + exit(); + } + } if(n < 0){ printf(1, "cat: read error\n"); exit(); |