Bug 209031
| Summary: | Files in procfs return EOF after the first partial read | ||
|---|---|---|---|
| Product: | File System | Reporter: | Matias A. Fonzo (selk) |
| Component: | Other | Assignee: | fs_other |
| Status: | NEW --- | ||
| Severity: | normal | CC: | selk |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | Any | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: | Demo program | ||
Created attachment 292157 [details] Demo program Shells must read in single-byte reads, and that procfs violates the normal filesystem expectations, and that the C sample program demonstrates that behavior. My use case is with the mksh shell, for example: IFS= read -r < /proc/sys/kernel/random/poolsize size; echo $size Gives: 4 Then it returns with 1 (exit status). The default value at the poolsize is: 4096