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Ensures that also if truncating parity fails we get the real size.

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This commit is contained in:
Andrea Mazzoleni 2013-12-24 22:07:09 +01:00
parent 234aeb3976
commit 3c7bf1a14b
1 changed files with 18 additions and 8 deletions
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26
parity.c
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@ -185,7 +185,7 @@ int parity_chsize(struct snapraid_parity* parity, data_off_t size, data_off_t* o
f_ret = ret;
f_errno = errno;
/* reget the stat info */
/* get the stat info */
ret = fstat(parity->f, &parity->st);
if (ret != 0) {
fprintf(stderr, "Error accessing parity file '%s'. %s.\n", parity->path, strerror(errno));
@ -205,22 +205,32 @@ int parity_chsize(struct snapraid_parity* parity, data_off_t size, data_off_t* o
goto bail;
}
} else if (parity->st.st_size > size) {
ret = ftruncate(parity->f, size);
if (ret != 0) {
fprintf(stderr, "Error truncating parity file '%s' to size %"PRIu64". %s.\n", parity->path, size, strerror(errno));
goto bail;
}
int f_ret;
int f_errno;
/* reget the stat info */
/* truncate the parity file */
ret = ftruncate(parity->f, size);
/* save the state of the shrink operation */
f_ret = ret;
f_errno = errno;
/* get the stat info */
ret = fstat(parity->f, &parity->st);
if (ret != 0) {
fprintf(stderr, "Error accessing parity file '%s'. %s.\n", parity->path, strerror(errno));
goto bail;
}
/* return the new real size */
/* return the new size */
*out_size = parity->st.st_size;
/* now check the error */
if (f_ret != 0) {
fprintf(stderr, "Error truncating parity file '%s' to size %"PRIu64". %s.\n", parity->path, size, strerror(f_errno));
goto bail;
}
/* adjust the valid to the new size */
parity->valid_size = size;
}