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openSUSE:Evergreen:11.2:Test
kvm
kvm-qemu-preXX-qcow2-error-handling.patch
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File kvm-qemu-preXX-qcow2-error-handling.patch of Package kvm
commit db89119d40390b8db0ea65278a6020e9653651ff Author: Kirill A. Shutemov <kirill@shutemov.name> Date: Wed Jan 20 00:56:15 2010 +0100 block/qcow2.c: fix warnings with _FORTIFY_SOURCE CC block/qcow2.o cc1: warnings being treated as errors block/qcow2.c: In function 'qcow_create2': block/qcow2.c:829: error: ignoring return value of 'write', declared with attribute warn_unused_result block/qcow2.c:838: error: ignoring return value of 'write', declared with attribute warn_unused_result block/qcow2.c:839: error: ignoring return value of 'write', declared with attribute warn_unused_result block/qcow2.c:841: error: ignoring return value of 'write', declared with attribute warn_unused_result block/qcow2.c:844: error: ignoring return value of 'write', declared with attribute warn_unused_result block/qcow2.c:849: error: ignoring return value of 'write', declared with attribute warn_unused_result block/qcow2.c:852: error: ignoring return value of 'write', declared with attribute warn_unused_result block/qcow2.c:855: error: ignoring return value of 'write', declared with attribute warn_unused_result make: *** [block/qcow2.o] Error 1 Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name> Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Index: qemu-kvm-0.12.3/block/qcow2.c =================================================================== --- qemu-kvm-0.12.3.orig/block/qcow2.c +++ qemu-kvm-0.12.3/block/qcow2.c @@ -754,7 +754,7 @@ static int qcow_create2(const char *file uint64_t old_ref_clusters; QCowCreateState s1, *s = &s1; QCowExtension ext_bf = {0, 0}; - + int ret; memset(s, 0, sizeof(*s)); @@ -858,7 +858,11 @@ static int qcow_create2(const char *file ref_clusters * s->cluster_size); /* write all the data */ - write(fd, &header, sizeof(header)); + ret = qemu_write_full(fd, &header, sizeof(header)); + if (ret != sizeof(header)) { + ret = -1; + goto exit; + } if (backing_file) { if (backing_format_len) { char zero[16]; @@ -867,25 +871,59 @@ static int qcow_create2(const char *file memset(zero, 0, sizeof(zero)); cpu_to_be32s(&ext_bf.magic); cpu_to_be32s(&ext_bf.len); - write(fd, &ext_bf, sizeof(ext_bf)); - write(fd, backing_format, backing_format_len); - if (padding > 0) { - write(fd, zero, padding); + ret = qemu_write_full(fd, &ext_bf, sizeof(ext_bf)); + if (ret != sizeof(ext_bf)) { + ret = -1; + goto exit; + } + ret = qemu_write_full(fd, backing_format, backing_format_len); + if (ret != backing_format_len) { + ret = -1; + goto exit; } + if (padding > 0) { + ret = qemu_write_full(fd, zero, padding); + if (ret != padding) { + ret = -1; + goto exit; + } + } + } + ret = qemu_write_full(fd, backing_file, backing_filename_len); + if (ret != backing_filename_len) { + ret = -1; + goto exit; } - write(fd, backing_file, backing_filename_len); + } lseek(fd, s->l1_table_offset, SEEK_SET); tmp = 0; for(i = 0;i < l1_size; i++) { - write(fd, &tmp, sizeof(tmp)); + ret = qemu_write_full(fd, &tmp, sizeof(tmp)); + if (ret != sizeof(tmp)) { + ret = -1; + goto exit; + } } lseek(fd, s->refcount_table_offset, SEEK_SET); - write(fd, s->refcount_table, + ret = qemu_write_full(fd, s->refcount_table, reftable_clusters * s->cluster_size); + if (ret != reftable_clusters * s->cluster_size) { + ret = -1; + goto exit; + } + lseek(fd, s->refcount_block_offset, SEEK_SET); - write(fd, s->refcount_block, ref_clusters * s->cluster_size); + ret = qemu_write_full(fd, s->refcount_block, + ref_clusters * s->cluster_size); + if (ret != ref_clusters * s->cluster_size) { + ret = -1; + goto exit; + } + + ret = 0; +exit: qemu_free(s->refcount_table); qemu_free(s->refcount_block); @@ -900,7 +938,7 @@ static int qcow_create2(const char *file bdrv_close(bs); } - return 0; + return ret; } static int qcow_create(const char *filename, QEMUOptionParameter *options)
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