What does errno 49 (EDQUOT) mean?

EDQUOT

Filesystem quota exhaustion

On Solaris, EDQUOT is errno value 49. The base message is Disc quota exceeded, but the useful diagnostic context is narrower than the short message: a Solaris UFS-style disk-block or inode quota was exhausted.

For EDQUOT, use the Solaris-specific errno table first, then compare with POSIX only for portable behavior. For EDQUOT, some Solaris values share names with other UNIX systems but have different numbers or more specific historical meanings.

What to check for EDQUOT

• Check both block quota and inode quota for the user or project.
• Compare with ENOSPC, which indicates general free-space exhaustion rather than quota enforcement.
• The failing operation may be write, mkdir, symlink creation, or directory-entry creation.

References for EDQUOT

• Oracle Solaris intro(2): error numbers
• illumos errno.h definitions
• POSIX errno.h

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