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fd: better error messages for pread/pwrite

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Include file name and offset.

Signed-off-by: Zygo Blaxell <bees@furryterror.org>
This commit is contained in:
Zygo Blaxell 2021-06-30 17:53:43 -04:00
parent eb2630dee6
commit 95347a08bb
1 changed files with 2 additions and 2 deletions
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4
lib/fd.cc
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@ -362,7 +362,7 @@ namespace crucible {
} }
int rv = ::pwrite(fd, buf, size, offset); int rv = ::pwrite(fd, buf, size, offset);
if (rv != static_cast<int>(size)) { if (rv != static_cast<int>(size)) {
THROW_ERROR(runtime_error, "pwrite: only " << rv << " of " << size << " bytes written at offset " << offset); THROW_ERROR(runtime_error, "pwrite: only " << rv << " of " << size << " bytes written at fd " << name_fd(fd) << " offset " << offset);
} }
} }
@ -442,7 +442,7 @@ namespace crucible {
THROW_ERRNO("pread: " << size << " bytes"); THROW_ERRNO("pread: " << size << " bytes");
} }
if (rv != static_cast<int>(size)) { if (rv != static_cast<int>(size)) {
THROW_ERROR(runtime_error, "pread: " << size << " bytes at offset " << offset << " returned " << rv); THROW_ERROR(runtime_error, "pread: " << size << " bytes at fd " << name_fd(fd) << " offset " << offset << " returned " << rv);
} }
break; break;
} }